on the midi output end set on value from 1- 255, try 1 first see what color it is. then try 255 and see what color it is. it will be time consuming but you can prob fig it out. my apc40 mkii has a chart that shows you brightness of each color and what channel each color is. your using a no name brand controller, i tried finding the midi map color chart for you but couldnt find it. good luck