The color(s) black, gray, blue, and green is/are claimed as a feature of the mark.
The color gray appears in the letters "D". The color blue appears in the left eye, left side of the mouth, and left half of the number. The color green appears in the right eye, the right half of the mouth, and the right half of the number 2. The color black appears in the words "head" and in the black rectangle surrounding the letters D, the eyes, mouth, and numeral 2.
HEAD TWO HEAD DD; HEAD TO HEAD DD