Change color of the language banner

[HelenZhou]

Hello, for the banner above the title, does anybody know how to change the background color? I would like to change it from default dark gray to a color that matches with the form title color. Thanks so much.

[BryndaHatch]

I have some links here that might be helpful:

https://doc.arcgis.com/en/survey123/desktop/create-surveys/styleyourform.htm#ESRI_SECTION1_B332375C6...

https://community.esri.com/t5/arcgis-survey123-blog/extending-survey123-part-1-white-labeling/ba-p/8...