To me it looks like there is a drop of blue highlight, glow red plastic driped in the mold then a red line painted in the mold and on top of the drip. Then the two molds are put together and injected the rest of the mold with blue highlight and glow red plastic. The the eyes are put on and the last step would be diping only the head in clear plastic to keep the eyes on. You can see the sholder on the tail from the clear dip. Weather the tail or the drop was done first is hard for me to say. I just went with the drop idea becase the red isn't flat in the head