Compare by contents - other part of background color

[Umpal]

I want to change entire background color for 'Compare by contents'. I can change background color in Options=>Color=>Others: Text Background, Selected lines: Background. However it changes background only under the text and leaves white color for the part where the text is not present (especially seen when both files are relatively short and occupy part of both windows).
Is there a hidden setting to do that or it's simply missing in the TC?

[ghisler(Author)]

No, but you can change the color "Text background (no differences)".

[Umpal]

No, but you can change the color "Text background (no differences)".

It amazes me how blind sometimes I am . Thanks Christian.