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Sometimes people have to carry a lot of different spray cans to accomplish a paiting or graffiti.This is overwhelming and inconvenient. “Colorful Spray can” uses the principle of RGB color model to adjust color. With help of the upper tripple-color-ring ,and you simply turn the ring to get the color that you want. This reduces greatly the number of spray cans you have to carry and provide numerous kinds of color during your creation.
Jinyi Chen; Tuo Fang; Feng Chen; Xi Wang;