It's possible to replace the XML files with styles and themes. You just need to copy the original XML file, modify it, and add it as a new XML file.
But once compiled or before?
Didn't it require root permissions to modify the apk files?
And if it's before, I don't think the extension will reach that level, since the permission it's given is like a guest on the platform. AI2 would have to provide a way to change the xml to its own, otherwise the default would always be integrated when compiling.
Hmm, because I tried to do something similar to a temporary replacement and Android 15 rejects it, but later versions of Android work well with the idea you mention. Maybe I'm missing something else.
You use window.Insets and draw a background the same size as the bar.
From the extension level, i.e., before compiling the APK. Additionally, recompiling the extension is not required when changing colors. You can use a script, such as JS, to edit the color in the compiled extension.
Yes, I had thought of that and had let the extension give me the safe margins for the bars, but I don't know if the user wants to take an extra step.
Is this a known bug ?
Quite sure it is a bug in 2.76 only. see there.