This isn't my personal experience (yet), but for a cost-effective solution I was told to look for a contractor that paints aircraft for the military, and choose from their standard colours. You may also ask them to let you do the stripping part of the job (or a major part thereof). I also have a Grumman, and it does indeed require special care when stripping the paint (see Maintenance Manual, Chapter 20, last 3 pages), but the procedure is pretty straightforward and does not involve any special skills.