Don't know where you are, but in this part of the country (south central), Mena, Arkansas, seems to be the paint capital for airplanes. A little over a year ago I was looking at a C-150 that needed paint badly and I had the same question you now have. I got a quote from one of the Mena companies for a "sand and paint" same colors and same paint scheme for about $3,200 I believe. I have the name of the company and the contact info at work. If you're interested, I can email it to you tomorrow.
Don
