The color(s) red, yellow, green, blue, violet, and black is/are claimed as a feature of the mark.
"OPTICS"
The mark consists of an arched rainbow above the word "OPTX" in black capital letters. The rainbow begins above the "O," arches over the "PT," and ends at the "X." The rainbow is depicted by the colors of red, yellow, green, blue, and violet.
OPTICS