I've just started doing an online workshop with Susan Sorrell. It's called 'Fear No Colour'. In the first lesson, we are exploring colour mixing using food dyes. Here's what I ended up with. The colours are not quite right because the red food colouring didn't turn red no matter how much I added, but the theory is the same. I've dyed lots of fabric colour wheels, but didn't get to eat them!
I'll include the recipe for the butter cookies if anyone wants it, but please don't ask how to do the frosting - you'll have to sign up for the class for that
1/2 cup sugar
1/2 teaspoon vanilla extract
2 cups self raising flour
Cream butter, sugar and vanilla until fluffy. Add egg and beat well. Stir in sugar.
Roll out on floured surface and cut out with cookie cutter. Bake at 180degC (350degF) for 8-10 minutes.
You can also roll out into a sausage shape, wrap in foil and chill for an hour (or up to a couple of days) before cutting into slices and baking. You could just roll spoonfuls of dough into balls, flatten a bit then bake. They will probably take a few extra minutes to cook. Try adding chopped glace cherries or ginger, slivered almonds, coconut, choc bits or whatever else takes your fancy!