The Power of the Tech; book 3 of The Black Blade Trilogy

After the victory on Mount Ecina, the color guards believe they have wiped the threat of the white power from the face of Elberia. In doing so, however, they have removed a powerful force that was keeping the power of the black at bay. Now the colors are again moving and writhing through Rolak as they were hundreds of years ago when Niethon first tamed them. It is up to them to make the decision, whether to face Xor themselves, or return home and let others challenge the might of the black blade. They seem to be Elberia's only hope while they wield the power of the colors, but there are powers greater than they could imagine waiting to be unleashed. All they have to do is find them.