Press the green flag to start. Use the arrow keys to move the cat. Go to the colors that will make up the color that the cat asks you for. Once you're done choosing the colors, go to the light blue line on the right.
To win, you must combine the correct two colors to get the color in question. For example, to get green the sprite must touch yellow and blue, in any order. Touching all 3 color will automatically make you lose