Try finding a suit in your size that's in a different color - preferably white, beige or a light blue. Then, DYE it the appropriate shade of blue. Most dyes work well with natural fibers like cotton, silk and wool. I believe there are dyes for synthetics like polyester, but they are harder to find (and don't seem to work as well), so do your best to find a natura fiber suit. Men's Wearhouse often has good sales and could possibly have your size. Also, you might ask around to see if anyone you know has a suit that fits you that they'll allow you to dye (especially if that person has "outgrown" the suit and wants to send it off to Goodwill).