I wanted to point out that Aerotronics uses regular paint on the panels and stickers for the lettering.  "Stickers" is probably a bit derogatory, because they are really high quality and you really can't see the edges unless you look closely.  I'm not sure how the stickers would hold up over time.

 

Lancair sends the panels out for powder coating and silk screening, much more expensive, but much more durable.

 

Paint is easier to touch up, but powder coating is tougher.

 

I did mine myself using a base coat, custom made transfer lettering, with a clear coat over the top.  Very tough for a "homegrown" system.  I added a flattening agent to the clear coat to get an eggshell finish.  You definitely don't want a glossy panel.

 

See attached transfer lettering artwork.

 

Mike Easley

Colorado Springs