Adding color to glass is a tricky skill to learn. Why? This video is a great example. There is no canvas to start with, no white background to build layers of color on. This means that you have to account for transparency and translucency. Direct light and reflected light. Distortion and form and above all intent. Always remembering simple lessons from normal life, like blue and yellow make green, don't really apply. We're mixing minerals and metallic oxides, and when the source location of thos