I received a request for separations of this image along with a website underneath on pigment-dyed t-shirts of various colors:
Using QuikSeps I was easily able to sep it into 6 colors: White Underlay, Yellow 102, Orange 172, Green 375, Blue 306, and Black. I went in to adjust color channel curves, and hand paint some areas to fine tune. I also added the picture outline and website in Illustrator.
Here's a close-up of the final pre-press comp:
And a final t-shirt comp:
I'll try and take pictures of the first press run proof and update everyone...