Interpolates between colors a and b by t.
/t/ is clamped between 0 and 1. When t is 0 returns a. When t is 1 returns b.
// Converts a white color to a black one trough time.
var lerpedColor : Color = Color.white;
function Update() {
lerpedColor = Color.Lerp(Color.white, Color.black, Time.time);
}