Scientists have been fascinated with the question of what color is ever since Isaac Newton discovered that white light contains the entire color spectrum. Join CHFâs Erin McLeary and Integral Molecularâs Joe Rucker as they whip up a batch of mauvine, the first synthetic dye, in CHFâs catering kitchen. In this weekâs Chemistry in Your Cupboard, learn how you can make your own pH meter with a common vegetable. Element of the Week: Chromium.