The window file should be eq2ui_popup_book.xml
Out of curiosity, what is making it difficult to read? The background should be a light purple and the text black.
If you want to change the background to white...
Open that file and search for RStyleDefault="tile". Delete that and replace it with BackgroundColor="#FFFFFF"
On the other hand, if you want to change the text color to white...
Search for TextColor="#FCD781">1
Replace the #FCD781 with #FFFFFF. Note that there should be TWO instances of this, replace both.
You can also substitute in place of #FFFFFF the hex code for whatever colors you like.
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