I would go for a DP 95 as a good start
The greens on the helmet should be a bit darker with more grey in it than the Fett helmets
A nice popcicle orange will work great for the mandible areas.
Be sure to fill in the dent really well and the helmet should have about 6 kill stripes instead of the Fett numbers.
Check out
http://members.shaw.ca/Jodo_Kast/ if you want some pics or to read the first 3 chapters of my Jodo Kast fan fiction.