In the file details view, when I group the files, I have the option to set the font color and background color. However when I use the grouped flat view, I can't find a way to do it. I tried here, but not work. It's possible?.
grouping files in normal view
grouping files in flat view...
Thank you very much for answers.
It’s just the normal folder colors.
Means it's not posible to modificate them?.
Can you explain to me, please, what do these configuration options refer to?:
filegroup header, filegroup column, that I have shown in the image.
Thank you very much.
Ok, now I understood. Thank you very much. 
Sorry, Just a detail that I have observed:
It's not "Defuminado", it's "Difuminado". Maybe it will help in case other people search...
