Subtractive color mixing is what happens when you mix paint pigments together. For anyone who ever took art classes as a kid, you were taught the primary colors were red, yellow and blue.

Seeing the Xbox Design Lab work from Web interface to couch reality We order and try out two custom-colored pads—then run into wireless woes.

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 … ...