Hello,
this time I'm having trouble with applying predefined Esri Styles to my Controls (Expander and TextBlock). It ignores the ArcGIS Pro theme settings and always shows light theme font colors also in dark theme mode, see picture:

Is there any cache folder for the add-in that I can delete/remove?
I'm still on ArcGIS Pro 2.1.
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>Expander</SPAN> <SPAN class="attr-name token">Header</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Kurs zum Ziel<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">HorizontalAlignment</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Stretch<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">VerticalAlignment</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Top<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Grid.Row</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>3<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">Grid.ColumnSpan</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>5<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Margin</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0,0,10,0<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Height</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>125<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">IsExpanded</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>{Binding CourseToTargetExpanded}<SPAN class="punctuation token">"</SPAN></SPAN><SPAN class="style-attr language-css token"><SPAN class="attr-name token">
<SPAN class="attr-name token">Style</SPAN></SPAN><SPAN class="punctuation token">="</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">{</SPAN>DynamicResource Esri_Expander<SPAN class="punctuation token">}</SPAN></SPAN><SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">IsEnabled</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>{Binding HasNavigation}<SPAN class="punctuation token">"</SPAN></SPAN><SPAN class="punctuation token">></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>Grid</SPAN> <SPAN class="attr-name token"><SPAN class="namespace token">x:</SPAN>Name</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>courseGrid<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Margin</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>2,2,2,2<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">></SPAN></SPAN>
<Grid.RowDefinitions>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>RowDefinition</SPAN> <SPAN class="attr-name token">Height</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>30<SPAN class="punctuation token">"</SPAN></SPAN><SPAN class="punctuation token">/></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>RowDefinition</SPAN> <SPAN class="attr-name token">Height</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>95<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">/></SPAN></SPAN>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>ColumnDefinition</SPAN> <SPAN class="attr-name token">Width</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0.5*<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">/></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>ColumnDefinition</SPAN> <SPAN class="attr-name token">Width</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0.5*<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">/></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>ColumnDefinition</SPAN> <SPAN class="attr-name token">Width</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0.5*<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">/></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>ColumnDefinition</SPAN> <SPAN class="attr-name token">Width</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0.5*<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">/></SPAN></SPAN>
</Grid.ColumnDefinitions>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>Label</SPAN> <SPAN class="attr-name token"><SPAN class="namespace token">x:</SPAN>Name</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>lblTargetCourse<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Content</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Soll-Kurs: <SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Grid.Row</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Grid.Column</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">/></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>TextBlock</SPAN> <SPAN class="attr-name token"><SPAN class="namespace token">x:</SPAN>Name</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>tbxTargetCourse<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Text</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>{Binding TargetCourse}<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">Grid.Row</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Grid.Column</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>1<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">VerticalAlignment</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Center<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Padding</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>5,0,0,0<SPAN class="punctuation token">"</SPAN></SPAN><SPAN class="style-attr language-css token"><SPAN class="attr-name token">
<SPAN class="attr-name token">Style</SPAN></SPAN><SPAN class="punctuation token">="</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">{</SPAN>DynamicResource Esri_TextBlockDockPaneHeading<SPAN class="punctuation token">}</SPAN></SPAN><SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">/></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>Label</SPAN> <SPAN class="attr-name token"><SPAN class="namespace token">x:</SPAN>Name</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>lblDistance<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Content</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Abstand: <SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Grid.Row</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Grid.Column</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>2<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">/></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>TextBlock</SPAN> <SPAN class="attr-name token"><SPAN class="namespace token">x:</SPAN>Name</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>tbxDistance<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Text</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>{Binding TargetDistance}<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">Grid.Row</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Grid.Column</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>3<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">VerticalAlignment</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Center<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Padding</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>5,0,0,0<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Margin</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0,5<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">Foreground</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>{DynamicResource Esri_TextStyleDefaultBrush}<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">/></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>Canvas</SPAN> <SPAN class="attr-name token">VerticalAlignment</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Center<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token"><SPAN class="namespace token">x:</SPAN>Name</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>liveCourse<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Grid.Row</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>1<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">Height</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>15<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Grid.Column</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>0<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Width</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>{Binding CanvasWidth, Mode<SPAN class="punctuation token">=</SPAN>TwoWay}<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">Grid.ColumnSpan</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>4<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">SizeChanged</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>GpsModule_LiveCourseCanvas_SizeChanged<SPAN class="punctuation token">"</SPAN></SPAN><SPAN class="punctuation token">></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>Rectangle</SPAN> <SPAN class="attr-name token"><SPAN class="namespace token">x:</SPAN>Name</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>liveCourseLeft<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Fill</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>#E50000<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Height</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>15<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">Width</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>150<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Canvas.Bottom</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>25<SPAN class="punctuation token">"</SPAN></SPAN><SPAN class="punctuation token">/></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>Rectangle</SPAN> <SPAN class="attr-name token"><SPAN class="namespace token">x:</SPAN>Name</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>liveCourseRight<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Fill</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>#00CC00<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Height</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>15<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">Canvas.Left</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>150<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Canvas.Bottom</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>25<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Width</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>150<SPAN class="punctuation token">"</SPAN></SPAN><SPAN class="punctuation token">/></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>TextBlock</SPAN> <SPAN class="attr-name token"><SPAN class="namespace token">x:</SPAN>Name</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>liveCourseMarker<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Text</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>^<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">FontSize</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>26<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">Canvas.Bottom</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>10<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Canvas.Left</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>{Binding LiveMarkerPosition}<SPAN class="punctuation token">"</SPAN></SPAN>
<SPAN class="attr-name token">FontFamily</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Arial<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">Foreground</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>White<SPAN class="punctuation token">"</SPAN></SPAN><SPAN class="punctuation token">></SPAN></SPAN><SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"></</SPAN>TextBlock</SPAN><SPAN class="punctuation token">></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"></</SPAN>Canvas</SPAN><SPAN class="punctuation token">></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"></</SPAN>Grid</SPAN><SPAN class="punctuation token">></SPAN></SPAN>
<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"></</SPAN>Expander</SPAN><SPAN class="punctuation token">></SPAN></SPAN><SPAN class="line-numbers-rows"><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN></SPAN>Does anyone have an idea?