What is color of clay bar? What color of clay bar in your marketing?
some colors of clay bar on the marketing.
same grade clay bar also have different colors on the marketing
for example, blue color, some customer use for fine, some use to M H grade.

So, any color for different grades; 
we also have to do (customize) color according to customer request. 

here a sample for the color......

the boy to do a rainbow in kidgarden and home

let us do clay bar with colorful (do a play mage with color)