Getting Corn Starch Color To Stay

[feistycurves]

So I'm interesting in doing Color Me Rad, http://www.colormerad.com/about.html, and I'd love for the colors to stay in my t-shirt afterwards, as a great souvenir. Any suggestions?

[Buenchico]

From the FAQs on the website you've linked to:

"How do I keep the color in my shirt?

Your best bet is to never wash it and let the stink permeate through your house for decades. If that doesn't work for you, try the following suggestions, but be warned, they may end up ruining your masterpiece of a shirt:
1) Use spray adhesive post-race and let it dry before washing or
2) spray your shirt with vinegar, then iron it before washing."