Folder text is a different color

sometime long ago while I was fiddling around with various DO settings, I turned a single folder to a different color. but i can't figure out how i did it and how i can turn it back. in this case, i turned it's text to RED. it's not a system folder, just one of 50 in a very cluttered My Pictures folder.

screenshot

I looked there but I don't think that's the problem.

I have 50 folders displayed in the lister. All have blue text except one; it has red text. These aren't system folders, just subset folders in My Pictures. How do you specify this on a single folder?

Are you sure you didn't either compress the folder or set the S (system) bit on the folder?