02-23-2018, 10:30 PM
You can get white unless you have green and the green has to come from somewhere. In the image below, the "=Blue is in Addition mode, but Red is really (255,70,0) and Blue is really (0,185,255).
In your image the Red and Blue both have Green components that add up to 200+ (and the white isn't exactly white anyway).
In your image the Red and Blue both have Green components that add up to 200+ (and the white isn't exactly white anyway).