I detailed the two PF squads as "red" squad and "blue" squad, which was fun. Although I wish I had done the eyes blue! The blue went on like a dream, unlike the red which seemed to dry way too fast and needed 3-5 coats to show well.
Added in the PM:
On the advice of my kindergarten age son, who has fallen in love with the "green marines" (Salamanders), I have a few Marines with some green details and if a skull wasn't already hit with something else, it all got some gold.
Trying to stave off the suggestions of the boy and the wife to "add more color". The son today was asking me why I hadn't painted any Marines like the Imperial Fists, "da blue guys" and the "apokterry". Never should have let him watch Ultramarines with me. I found out the wife was expecting something like Marneus Calgar from looking at the pictures. I keep threatening to buy her some Eldar Harlequins to paint and am promising her that she will get to have total control over my WYSIWYG EC, so start painting and I want lots of detail work. ;)