adding color to white chocolate

I just need to add one dab of a color to each piece of white chocolate truffle at the bottom of the mold. Can I just mix colored coacoa butter with my tempered white chocolate and then dab the mixture at the bottom of my mold? I literally just need one little dab but I want to make sure that it's ok to use this mix--and that 1)my tempered white chocolate won't break and 2)the colored dab comes out of the mould together with the rest of the truffle.

Thanks!

You can - as long as you don't somehow manage to throw the chocolate out of temper by using coloured cocoa butter that is too warm.

Alternately you could simply put a dab of coloured cocoa butter on the bottom of the mold.

Thank you very much, Kerry!