[StuBeeDoo]

I'm going to be casting some small parts.  The resin I'm using is Smooth-Cast 327.  However, I specifically want a silver/grey colour, which isn't available in Smooth-On's "So Strong" range of tints.  Last year, I tried mixing a tiny amount of black into the white pigment, but it wasn't very successful.

I'm thinking outside the box, but has anyone ever attempted tinting resin with acrylic paint?  I know the obvious solution is to air brush colour on to untinted resin, but these parts are small - Scalextric Escort mk1 bumpers, SCX Citroen C4 WRC mirrors, and a few wheel inserts.

Thoughts (or maybe even experiences) please gents.