Custom theme to Atlas app header not applying

[AMatthews]

Hello all,

I am trying to use the Atlas Instant App template, but can't get the custom header colours to work. I would like the header on the app to be a specific shade of green (the forest theme one isn't quite right unfortunately). I tried going into themes, choosing custom, and changing the header colour by clicking the blue pencil button, but clicking on it does nothing. Is the button broken, or are custom colours for headers not available in the Atlas template? 

Thanks in advance with this.

Annie M.

[Stephanie_F · Accepted solution]

Hi @AMatthews thank you for reporting this. It was reproduced and logged as  BUG-000174711: Edit buttons for Color and Contrast Ratio for Instant Apps theme headers are unresponsive following the February 2025 release. It is now under review. 

[AMatthews]

Thank you for your quick reply @Stephanie_F , glad it was reproduceable. Looking forward to seeing it. resolved.