This disclosure pertains to an apparatus for varying a footwear's color. The apparatus comprises a first variable filter having a first reservoir portion and a first non-reservoir portion. The first reservoir portion houses a first dye when the first variable filter is in a first state. The first non reservoir portion houses the first dye when the variable filter is in a second state. The apparatus further comprises a first air pouch adjacent to the first variable filter and a casing surrounding the first variable filter and the first air pouch.