I'm not aware of the other colors. The RGB color model is where three lights, blue, green, and red, are mixed together in varying ways to make a wide array of colors.
Yes, the RGB color model is an additive color model.
Red is such a pretty color, don't you think? I don't lean one way or the other, I just know that it has a 625 to 740 nanometer dominant wavelength. Oh wow! That's a new one for me! How many different shades are there? I am not sure but red is a primary color on the CMYK and RGB color models. Yep, along with yellow and blue right?
The RGB color model is an additive color model in which red, green and blue light are added together in various ways to reproduce a broad array of colors.