How to shade characters but not spaces
I'd like to create a paragraph style or even character style, if appropriate, where the text characters have a background color, but the spaces are unformatted space. Something like this effect:

I can't figure out how to shade only the non-space characters. I have a GREP style in play that can detect and modify the character style, but I can't figure out how to shade only the non white spaces.
Any help is appreciated!

