Green
Tamiya XF-21 - 1 part
Tamiya XF-23 - 2 parts
Gray
Tamiya XF-66
For the single Gray (which I now know definitively is not correct) the proper match can be found at Wal-Mart. You need to find a paint chip called Concrete, which I believe is #632. You can use that as a guide to mixing the color. This is the same color the original Enterprise was painted.
Scott





