Myself, I don’t cheap out on paint. Well, you usually do it the first time. Get it done, and be proud of your work. then fuel it up, have the fitting or carb leak, and have all your paint run down the leg of the motor leaving the primer.
Then you smarten up.
My other thought is, we have these suppliers providing us with exact colour matched paint and decals. Why not support them.
I use http://www.nymarine.ca for my paint.
I hear effanaco is another good supplier. Havent tried them myself as they wont ship to Canada, but if you are in the US may be a thought.