Isn't that the other way around...?

hmmnnn... need to find the info then.
Edit: there was even a thread talking about this:
http://www.ahsforum.com/forum/showthread.php?t=91126
and I remember when I read the Chinese translation of an interview back in 2003 (the time when COLORS was released), I think she said that she created Simple and Clean first. I wish I can find the original article to see which version is correct...