@chennes
I can confirm after aligning the previous commit, it is working correctly.
There is a small discrepancy in the behaviour because the Object Transparency is expressed in 0-100 where Alpha-channel is instead in 0-255
Anyway I think these features are a great improvement for FC and STP import/export and interoperability.
Thanks a lot @realthunder @chennes
When everything will be merged, I'll make an announcement at KiCAD forum about these improvements.
Maurice