* Calculate the intersections also for the internal disc.
* The resulting vertices have to be polished a bit. Delete all those close to the mesh. Do you notice how important it is to overlay as much of the prim vertices with the mesh as possible? If they are to far away you're breaking the smoothness of the outer shape.
* "Add triangle"
* Pick a color from the color bar. (Right-click on the color if you wanna substitute it with another color from the LDConfig.ldr)
* The color as well as its number show up in the preview.
* Rebuild the eye along the mesh. Do not create triangles crossing the mesh. Keep in mind that some of the triangles could be baked into quads, while rebuilding.
* Finally delete the triangles of the mesh and fill the void. I suggest doing this one by one so you don't get lost and choose different colors. Obviously you might color 16 - Main color right from the start.
w.
LEGO ergo sum