Hi Brad,
What I was going to say is that this belt is one of the few belts which is not made out of leather!
If you look close you can see that it's made of other material. (can't think of the name of it right now).
That material was dyed. And the color has changed.
Later on IC made another blue suit: the lucky suit (currently on display in Hollywood casino in Tunica).
I made photos using flash there (which was allowed). And also that suit has faded colors and now looks more purple then blue.
Also that gabardine material was dyed before the suit was made.
So my conclusion would be that both suits and the belt was blue. But that using dry cleaning had it's effect on the dye.
Not a cleaning mistake, but just it's natural causes of cleaning.
Although it remains strange as to why blue would change into purple. Obviously the belt wasn't washed. But color changed nonetheless.
Attachment 51977