first of all, i dun like being ignored. its okay to get criticised, its not okay to be ignored and then im the one being bm for criticising other ppl's designs.
second, i think carmen's design trashes everyone elses.. but i think every colour on the shirt means extra x amount of money for the shirt, where y = mx + C, C const.
third, i don't think pink and brown will work. although i think maybe the colours i tried are wrong and maybe the words are too big... you get the idea.
fourth, i spent about 1hr on the "concept" during maths lecture and 30 min in Paint instead of concentrating on my impt OP... hope you will at least look at this.