color.
The lines in this design are approximately ~1/20th of an inch (0.12 centimeters) thick and the squares are approximately ~1/2 of an inch (1.27 centimeters) thick. The light shade of yellow-green in this design is called "Lime Zest" and can be found on the official Spoonflower colormap located at JJ-34 with the hex code "E2ECCE". The black in this design is just jet black with the hex code "000000".