I did not care much about colors before X1.
In X1, Cakewalk removed colors of some buttons in such way that I could not anymore know if it was pressed down or not. Lack of contrast and colors slowed down my work and caused frustration so much that I began to look for solutions. Now I'm happy again and more productive than ever.
For me it was a good thing Cakewalk removed colors because it gave me inspiration to learn .NET programming. 1.5 years ago I could not write a Windows program to say "Hello world" but now making Win32 API calls is as natural as making a phone call for my GF. ;-)