I've had this frag for about a month. The underside was a dark tan before and now it's lightened up a lot and seems like it's continuing to do so. The tips are blue/purple and the upper sides have a light teal sheen to them. I'm really hoping that it will colour up to be like a Blue & Turquoise Aculeus. But regardless, anticipating the colours from acros seems to be most of the fun.