The color(s) green, grey is/are claimed as a feature of the mark.
The mark consists of three components, a text element, a line and a picture. The logo presents a text treatment for the text, a vertical line to the right of the text and a picture of dr. greene to the right of the vertical line. dr., the vertical line and sleep system are gray in color, greene's is green in color and the dr green picture is in full color with a white box border.