no less than 13 different colors t-shirts (self layout): yellow, light blue, lime, pink, purple, orange, gray, dark green, dark blue, red, cobalt blue, black and white.

This is all lower case. Can you fix that?
No less than 13 different colors T-shirts (self layout): yellow, light blue, lime, pink, purple, orange, gray, dark green, dark blue, red, cobalt blue, black and white.