By buying this finely finished magic treasure you have acquired a great trick which combines all the advantages a micro-trick can possibly have. It can be shown in all situations, when you are surrounded by people, sitting down, standing up. Superlative trickery, and best of all: You can hand out everything for examination without substituting, adding or taking anything away!
But let's start at the beginning. You show a black and a white chip. Beautifully turned from brass and with a recessed colour centre. The chips have a diameter of 32 mm (1.25"), i.e. can be shown even to a large circle.
The black chip lies in the flat of your left hand, the white one in the right hand, which you also stretch out flat. Keep both hands far apart, close and open them briefly, and the spectators cannot believe their eyes. The chips have switched places. No manipulation, nothing suspicious. You make the chips return to their original places in the same way.
The audience like it, so you show it again. But stop, now the penny has dropped: The watchers have definitely seen that you have simply turned the chips over when closing your hands. Ah - that's how it is done! The white chip is black on the other side, the black chip, white.
This logic now makes you philosophise about the meaning of colours and their origin. (Of course we include the text of little lecture with the illusion!). You explain to the audience that "white" contains all colours and that "black" means a complete lack of any colour. And then it happens: Inexplicably, the chips change colour while you are speaking. Suddenly the chip which was white, has turned red, with a blue back; the chip which was quite clearly black, has turned green, with a yellow back.
You can now hand everything to the audience for examination, you don't have to switch or add anything and need not take anything away.

Rainbow Fantasies, an illusion with an excellent finish that will give you a lot of pleasure.