I too have been trying to figure out the meaning of those four color bars, and I think I have it now. The first bar appears to be the coral for the time frame you are currently viewing. The second appears to be the 5 m coral color. The third appears to be the position of the price in relation to the cloud, green for above and red for below. It turns black if the price is in the cloud. And the last color bar is the fast trix for the time frame you are viewing. Hope that helps!