One of the problems with being a graffiti artist is that you have to carry around a different spray can for each color you intend to use. [Sandesh Manik] decided to solve this problem by building a ...

You might not have noticed if you’re not a digital artist, but most painting and image apps still get color mixing wrong. As we all learned in kindergarten, blue paint and yellow paint makes green ...

(Nanowerk Spotlight) Conventional pigments produce colors by selectively absorbing light of different wavelengths. Red ink, for example, appears red because it absorbs strongly in the blue and green ...