This function can be used to compute the result of color mixing (it assumes additive mixing).

mixcolor(alpha, color1, color2, where = class(color1))

## Arguments

alpha The mixed color is obtained by combining an amount 1 - alpha of color1 with an amount alpha of color2. The first color. The second color. The color space where the mixing is to take place.

## Value

The mixed color. This is in the color space specified by where.