Here's the nerdy but cool part: our eyes use three types of cone cells to see colour: S-cones for blue, M-cones for green, ...

Kids will have the opportunity to create their crayons, change the colours of the rainbow using RGB and monochrome flood ...

A growing culture of Crayola collectors partly inspired this colorful ... make a perfect rainbow, this collection has a cohesive palette. Crayola Limited Edition Retired Colors Crayons, Coloring ...

The sunlight pours in through the window, translating color to vision. Claire is making a rainbow. She picks up a crayon. "This is ‘thistle.' It's what Eeyore eats." Next she chooses "dandelion ...