Check this out:
http://www.craftzine.com/blog/archive/2007/04/tshirt_designs_created_with_st.html?CMP=OTC-5JF307375954
It looks pretty easy to do, and I like the idea of jazzing up a few of those Old Navy t-shirts I've accumulated over the years. I imagine you could do several applications, too, so that you get varying levels of color.
Lisa
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Lisa Clarke
Polka Dot Creations - Jewelry, Gifts & Other Neat Stuff by Lisa Clarke
The Polka Dot Cottage - Celebrating Home, Hearth and Creative Pursuits
Polka Dot Radio - Alternative Folk, 1990's, Indie Pop