Help with Theme editing

I’ve created a custom theme using the Clear Theme as a template. My main purpose for this project is to create an easy to use (wife Approved) interface for our iphones. I’ve got it looking how I would like, but I have a few issues.

#1- In the mobile HA app, the text/icons at the top and icons at the bottom are white, and are nearly invisible with the theme.

#2 - All the linked text in the LogBook is white and nearly invisible
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#3 - Text for devices like the Apple TV is white and invisible when the background is light
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#4 - This is more of a preference, and not overly important. Is it possible to change ONLY the background of the Title Bar (where it says “Home Assistant”) without changing the main background.
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Any help with these issue would be greatly appreciated

Thanks