My punch cards are now available in 16 simple colors (originally 8) and have expanded to include Attendance, Citizenship, Perfect Score, and Reading, as well as the original Homework cards.
Each card is available in all 16 colors. The pages within the file are arranged with the first two pages containing all colors and the following sixteen pages containing one color each.
Buyers of the original 8-color Homework Punch Cards are given this update for free as thanks for their support. :)