Changing all colors in Appearance->Colors dialog doesn't change color of unselected labels under folders and files.
Steps to Reproduce:
1. Change to any dark theme
2. Try to change all dark text colors to light
3. Labels under icons don't change
Changing color of icon labels
Linux (x86_64) release 3.14.7-200.fc20.x86_64
Thanks for the bug report!
Sounds like bug 329186 which was fixed in 4.13
After you have updated to the latest KDE SC release (current version: 4.13.2) and you can still reproduce this problem, please reopen this bug report. Thanks!
*** This bug has been marked as a duplicate of bug 329186 ***