The color(s) black, white and blue is/are claimed as a feature of the mark.
"QUALITY" AND "EXCELLENCE" AND "SINCE 1965"
The mark consists of a black circular seal with scalloped edges. Within the seal is a white circular line and the words "QUALITY EXCELLENCE" in white, then another white circular line and then a blue circle with the words "SINCE 1965" in white. Superimposed over the seal is a drawing of pipes and an elbow pipe fitting in white, with black lines to indicate outlines and shading.
QUALITY EXCELLENCE SINCE NINETEEN SIXTY FIVE