Freeze spray is the way to go. Did my playfield as well. The blue color is Createx W013 Wicked Lagoon Blue as an exact match on the large blue area's. In the netherlands i order it at: http://www.airbrush-services-almere.nl/shopasa/contents/nl/d170_02.html

For more information and pics of my FH playfield visit: http://www.flipperforum.be/viewtopic.php?f=12&t=5288

Good luck man!

Use the freeze spray method. I used a blowdryer on my F14-tomcat and pulled a lot of paint of the inserts winding me up with replacing all the insert decals. Used freeze on my BTTF, FH and even on my Fire (which has a tendency of being very difficult) and almost no lift. Be careful, be patient and be willing to invest. I usually use 2,5 can of 400ml freeze 75 which costs 19 euros (in NL) per can. So removing mylar usually costs me around 50 euros.

If you want some pics, check my site (in Dutch however): http://www.flippergast.nl

Aren't you going to do touchups and protect your playfield??

If you don't protect your playfield the artwork is going to come off and all of your work will be obsolete. Pity.