2. What are the two main color models? What are the color codes for yellow and green in each of the models?
Red, Green, Blue (RGB), is the color model based on direct light sources, typically used for monitors and Web pages. Yellow is R+G or FFFF00 in hex. Green is simply 00FF00. Cyan, Magenta, Yellow, and Key or Black (CMYK) is the reflective model based on print colors. Yellow is simply 0,0,100,0. Green is C+Y or 100,0,100,0.