I'm quite flattered by this effigy so thanks to the person concerned. You know who you are! The colours that we see are governed by what reflects. White light was hitting this board. Blue ink absorbs red and green but reflects blue so that's what we see. The white board reflects all of red, green and blue. They are mixed together to let us see white. Red, green and blue are called primary colours in Science because they mix to make white. Art has different primary colours with a different explanation.
