*What are the differences between Pink, Yellow and Blue?

The original YELLOW Sunshine(R) polishing cloth safely cleans and polishes jewelry, gold, silver, brass, copper, mirrors and most other metals, leaving a deep, long-lasting luster. Directions: Rub surface to be polished with medium pressure. Special polishing and cleansing action of works until the cloth is completely darkened. Do not wash the cloth.
Yellow Polishing Cloths
The BLUE Sunshine(R) soft polishing cloth is less abrasive than the original yellow cloth. The BLUE Sunshine(R) soft safely cleans and polishes jewelry, gold, silver, brass, copper, glass, mirrors, and most other metals, leaving a deep, long-lasting luster. Directions: Rub surface to be polished with medium pressure. Special polishing and cleansing action works until the cloth is completely darkened. Do not wash the cloth.

The Pink Sunshine(R) satin finished and polishing cloth is a double-action cloth. It has two different abrasive sides. The sand paper side adds a fine satin finish to metal; the polishing cloth side cleans and puts a high shine on finished jewelry, gold, silver, brass, copper, and most other metals leaving a deep, long-lasting luster. Directions: To apply a fine satin: Using medium pressure, rub your jewelry surface with the abrasive dark pink side of the cloth until a find satin effect emerges. Directions: To clean and polish: Using medium pressure, rub your jewelry surface with the polishing light pink side of the cloth. Special satin finish and polishing actions on each side will work until that side is completely darkened. Do not wash the cloth.
Please note: This cloth has two different abrasive sides; one is a sand paper that leaves a fine satin finish, the other side is a polishing cloth.