Final version. I do not like some much the idea of the color being kicked out of its well, so locations with colors cannot be closed.
I play tested it yesterday. First gate, the second color got in play at the woods. Then, they did not do much for a while... then the dust spread everywhere. That was scary. These bugs have an horror check of -3 with 4 SAN damages... Time to reach to them, you are almost mad. Though, if you manage to kill one with clue tokens, all dust evaporates (phew).
anyway, here it is