Charlie 210
Thanks for the clarification. Twy edge lights would/should have been blue not green so I think the original observation would have been correct.
Doubtless this will all come out in the rigorous, impartial, and technically competent investigation that we all expect knowing the professionalism of the SA CAA and the states that will be invited under 5.18 and 5.19 of ICAO Annex 13. They will, I am sure, be independently corroborated by area CCTV, witness statements, crew statements on timelines, CVR transcripts, ATC recordings (and tower CCTV if available) interviews with ATC duty staff, etc. as well as interviews and statements from other crew that used that intersection/turn immediately before the subject aircraft.
Having said that, first hand observations can always useful even from an untrained eye, as long as they are taken for what they are.