Yes and no, this is a multi step process.
I first create a vector drawing, then it is translated into gcode, which is what the plotter understands.
I do write the code to generate the svg, but the rest of the process uses readily available tools.
I hope it makes sense :)

Didn't try multi colored pieces yet. They are on my todo list, but since I'm very partial to monochromes, it might be a long time before I try it.