I cut down the layer height to try and clean it. The normal 1mm was just too high with so many layers. I included a test peice with the same elevations so you can try see how the layers hold up without wasting much filament.
Layer Division:
0-1mm: White
1-1.4mm: Purple
1.4-1.8mm: Orange
1.8-2.2mm: Red
2.2-2.6mm: Green
2.6-3.0mm: Black
The author hasn't provided the model origin yet.