it depends on how much of each and what shade of each color but usually you get a different shade of brown.
^ that's not my answer! however, if you mix blue and red, you get purple! If you mix green and green, you get more green! Then add some more green and you get.............tons of green!
light brown
Hazel
You get a light brown.
light brown. red,yellow and blue make brown and if you mix white with it it should go lighter.
Random
Brown
if you mix red, blue, and yellow, you get brown
to mix dark brown, mix black, blue, yellow and red
You get light blue.
black
brown
brown
Brown.