So I can see all but the blue and orange, but apparently I'm not alone. On the page of the blue is this comment:
"Alex Segura says on April 24th, 2009 at 9:44 am :
We’re looking into this. Thanks for the heads up!"
and then
"Greg McElhatton says on April 24th, 2009 at 11:07 am :
The problem is that the larger version of the image is in CMYK instead of RGB, and not all browsers support CMYK. Once it’s been converted and re-uploaded it should fix the problem."