No, I do not believe so. The iDye that fast_fate used appears to be specifically made for polyester. I have tried dyeing my 6ZPs with Rit, but to no avail:
Even though other people have had success dyeing plastic using Rit (if interested, look here, here, and here), it seems that Rit is designed primarily for natural fibers as opposed to synthetic. Its failure to dye the GTs may be attributed to the qualities of the plastic that Nidec uses to manufacturer its fans or an incorrect ratio of water to Rit used in my dyeing process (1½ bottles of Rit to ~0.75 quarts of tap water kept at 160 - 180 °F for an hour). Either way, the use of a dye carrier as lowfat recommended is more than likely the key factor in producing quality results with whatever dye you were to use.