blend function

Input type	Output type
color, color, float	color

The blend function accepts three parameters: two colors and a floating-point value. It interpolates between the two colors depending on the value of the third parameter. The alpha values of the colors are interpolated as well.

If the third parameter is 0, the first color is returned; if it is 1, the second color is returned. Values between 0 and 1 will return a mix of the two colors. You can also use other values to extrapolate.

Examples:

blend(rgb(1, 0, 0), rgba(0, 1, 0, 0.5), 0)    ; rgba(1, 0, 0, 1)
blend(rgb(1, 0, 0), rgba(0, 1, 0, 0.5), 0.5)  ; rgba(0.5, 0.5, 0, 0.75)
blend(rgb(1, 0, 0), rgba(0, 1, 0, 0.5), 1)    ; rgba(0, 1, 0, 0.5)