f3d: Missing colors with STEP file

Describe the bug Colors from STEP files not represented

To Reproduce Steps to reproduce the behavior: Open the file

The STEP file can be exported here: https://cad.onshape.com/documents/0e914e25b085e45c5ea9909d/w/0e60af9e7041cf3f62561d86/e/3a0581e7443351b7b7ca6a93?renderMode=0&uiState=6269a3d56959b541b9d18cb2

Expected behavior

System Information:

• OS: Kubuntu 22.04
• GPU and GPU driver: AMD Renoir

F3D Information

f3d 1.2.1

F3D - A fast and minimalist 3D viewer
Version: 1.2.1
Build date: 2021-12-13 23:27:53
System: Linux-5.11.0-1022-azure x86_64
Compiler: GNU 7.5.0
RayTracing module: OFF
Exodus module: ON
OpenCASCADE module: 7.6.0 (no metadata)
Assimp module: 5.1.0
VTK version: 9.1.20211124 (build 20211124)

Copyright (C) 2019-2021 Kitware SAS.
Copyright (C) 2021-2022 Michael Migliore, Mathieu Westphal.
License BSD-3-Clause.
Written by Michael Migliore, Mathieu Westphal and Joachim Pouderoux.