The Colour Matching Colour Blindness Test is a colour blindness test which I developed. It allows us to test a persons ability to see colour, specifically red-green colour blindness. This Colour Matching Colour Blindness Test is created using the Processing IDE. In the sketch the colours are calculated so that a set of 6 'confusable' colours are correctly chosen as the colours for the buckets and the random colours for the ball. Next a ball repeatedly falls from the top of the screen with a random colour and the user must move the ball to the correct buckets. A colour blind person would not be able to match the falling ball into the correct bucket whereas a person with correct colour vision would.