Nothing special, just painted Human Alliance Bumblebee's eyes with testors turquoise then added a small drop of tamiya semi gloss black with a toothpick for the movie accurate eyes
Nice. I'll have to keep this in mond when I do my custom Bee. The turquoise give it a lit effect. Very cool.
Actually I have been doing this for about 2 years now, my 3 oz testors turquoise bottle is 3/4 empty from doing this... but I usally give my TF's white pupils