This is a configured set of colors (administrative groups) specified as a bit vector (i.e., bit n is 1 if color n is in the set, where n = 0 is the LSB). For each link that this path goes through, the link MUST have colors associated with it, and the intersection of the link's colors and the 'exclude' set MUST be null. This field is meaningless unless mplsPathInfoName is not empty