Comment 1 for bug 248657

It seems that the only way to solve this is to add to this package its own local copy of rgb.txt.
I'm opening a new task for xorg to ask them to considering re-adding rgb.txt it back to x11-common, this change will surely break compatibility for several legacy applications.
Its a very small text file, I don't see it as a big problem to keep it in a common place instead of every application making use of their own copy.
Please also note that in the current x11-common package there is a dangling symlink left in /usr/share/X11/ which is pointing to /etc/X11/rgb.txt.