The color(s) red, white and blue is/are claimed as a feature of the mark.
The mark consists of The letters CTR are used in white text with blue border, overlaid on an American Flag consisting of red and white stripes, and blue with white stars. The words Certified Trademark are in blue text across the top of a white shield with a blue outline. The words Trademark Certification Authority are in blue text against a white background, enclosed in two blue circles forming a circular border..