Vertex colors incorrect converting DXF to glTF

[aarongarvey]

I'm a new user to Assimp, so I'm looking for some assistance in determining if something is wrong with Assimp, my workflow, or my source DXF file.

I have a 3D DXF file in which I require to be converted to glTF format. Assimp performs the conversion fine without error on the command line using assimp export test.dxf test.gltf however when I view the resulting glTF file, the vertex colors used on the exported model do not match the original source DXF model.

The first link shows how the DXF model is viewed within Sketchfab when the DXF model is imported.
Original DXF Colors

The second link shows how the converted glTF model is viewer within Sketchfab (note: I get the same result when viewing the converted glTF in three.js and babylon as well)
Converted glTF colors

Link to source DXF and glTF files

Is anyone able to help steer me in the right direction on this?

[kimkulling]

Closed by #5426