Coloring 12 colors

Quick answer：

Coloring refers to the process of applying color to a surface, object, or medium. '12 colors' could refer to a color palette consisting of twelve distinct hues. This could be used in various fields such as art, design, and marketing. In art, a 12-color palette can offer a wide range of color combinations, while in marketing, it might refer to a specific branding strategy using these colors.