OpenScad Bezier Function with Ribbons

Perhaps it's bad form to create a derivative of your own thing when it's just a code update rather than an actual 'thing' but...

This thing incorporates a couple more changes to the Bezier functions. First, it adds a 3 element version of the PointOnBezCubic() function. So, there's now 2D and 3D. The 3D version can be used for x,y,z values, or for r,g,b values, as demonstrated in the pictures.

Speaking of pictures, I've added an example of how to use color with the bezier curve to give y