The refillable Color Dial Spray is a novel design for a spray can that
contains four colour cartridges (CMYK) in the one can. The two Korean
designers, Kim Youngsuk Kim Woosik, have taken the spraycan game to
another level. Two dials(for hue and brightness) help the painter
achieve the exact color required. The user can immediately change the colour
by turning the colour dials near the top of the can.
The two dials allow for precise mixing of the particular colour desired.
The colour cartridges can be refilled many times over. This helps with
the reduction of waste.
[VIA- Invasian Magazine)