Often times, reflections in metal take on a slightly bluish tone. So let's look at a new node type—a Constant3Vector, which is essentially a node that allows us to specify a color.
Click-and-drag a Constant3Vector into the Material Editor window. While a Constant has only one value that we can edit, a Constant3Vector has three values, R, G, and B (for red, green, and blue). By combining R, G, and B, we can make any color that your monitor can display.
Here you will see a box with R, G, B, and Desc options, and numbers opposite each option:
Type in a value of
1
for R; this will make the output of our node pure red. You can click the little black box at the top of the node to get a real-time. preview; notice the box turns yellow when the real-time preview is turned on.Alright, let's hook this up to our specularity. We currently have a Constant multiplied against our texture. Let's replace it with this Constant3Vector.
Ok, the highlight is definitely red...