you need different colourings. i forget exactly what, is it water colourings you need? sure someone else will clarify!
xx
Water will seize chocolate, therefore it's best not to use water based colorings. I'm pretty sure that the gel colors are water based too.
That leaves oil based coloring or just buying the pre-colored stuff.
That said, I don't have oil based coloring available to me. So I use powdered coloring diluted in the smallest amount of water possible (ie 1 drop) and add in a bit of cocoa butter.
Hope this helps!
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