>>3311831You're partially correct. Colours get muddy (or actually desaturated) when you mix them because that's how computer screens work.
- A pixel is made of three sub-pixels: red, green, blue.
- Each subpixel has a brightness range from 0 to 255.
- White is the brightest because all 3 sub-pixels are emitting light at the highest value, while any colour that has the combined light of 2 subpixels (yellow, green, magenta) is brighter than the light of a single subpixel.
- Greys appear when the values of each subpixel are exactly, or close together (51/51/51, 204/204/204, etc.)
So, when you're painting and you're mixing 2 colours that both have a contrasting combination of subpixel colours (r+b with b+g or g+b with r+g), the end result is a value that has r+b+g, which is closer to grey (and therefore more muddy/desaturated).
Photoshop has an option in the Colour Settings that allows you to blend colours using a Gamma value of 1. When you use that, colours are not so muddy because the resulting grey is made lighter instead of darker. The overall result in your painting can be nicer, because you won't have those dark lines between colours.
Ideally (and hopefully in the near future) we will be able to buy screens that won't have rgb subpixels arrays, but rgbmyc. The range of colours that can be accurately represented will be much larger. i think some tv manufacturer (Samsung?) made a screen a few years ago with additional yellow subpixels, claiming greater colour accuracy.
