Spreadshirt Shop, Better Shirt Styles

I have opened a new t-shirt shop at sexygirltees.spreadshirt.com. Spreadshirt is similar to Cafepress, but they both have pros and cons. My Cafepress shop is a premium shop, so I have more options there and alot more control. The shirt styles at Spreadshirt seem nicer and there are more choices and colors. However, in order to use any other color than white, you have to either use a vector image (meaning no blending colors and the image has to be .eps, so no good for my designs) or you can have them cut out the background, but that means that the image of your product, as seen by the customer, has the white background and looks like crap. Anyways, I would like to see how things go with the Speadshirt shop and maybe try to figure out the best way to put my designs on the colored shirts there. Im still figuring things out. Here is an example of one of my products at Spreadshirt: