"The color(s) purple, pink, red, orange, yellow, green, blue and black is/are claimed as a feature of the mark."
The mark consists of the colors purple, pink, red, orange, yellow, green and blue appearing in a clockwise rainbow pattern inside a circular CD-ROM on the left side of the mark. The color black letters in "electronic textbook" are in black; the colors blue and black appear horizontally around the circular CD-ROM on the left side of the mark.
"electronic textbook"