Quantum Paint will match your gelcoat if you send them a small sample. Their one gallon gelcoat is $110. I've seen them demo their Genius Bucket (everything to do a small boat for $500) at boat shows, and also on Ship Shape TV. You just roll on a couple of thin coats with a foam roller, no tipping required. They also have a 2 part gelcoat in a rattle can ($70), which they can match with a sample.