The color(s) blue, gold, green, charcoal is/are claimed as a feature of the mark.
The mark consists of The mark consists of a drawing of a person's body with a gear for a head, and also with another person running inside of the gear, similar to that of a mouse's running wheel, to the right of this image are two rows of text, the first row says (in lowercase) "sigma{pro}", and the second row says (in lower case) "human performance".