Back to the future license plate 1985 (without holes)

I like the design of the original but I had to retrace the outer hull because the mesh was weird (none manifold faces and overlapping geometry) and my slicer (cura) freaked out and gave very weird results. Also I removed the holes which I don't use and upped the thickness of the background a bit. Recommendet height is >=4mm (scale in your slicer). I printed in 0.2 layer height and 4mm height, filament color change would be before layer 6 (orange) and before layer 17 (blue)