Hi Nick,
Nice photos. Thanks for posting.
I was going to ask you when the change occured but looked at this first:
https://www.worldwar2.ro/forum/index.php?showtopic=4904
I thought post #2 in that thread gave the answer, and appropriate dates, but then Denes Bernad states in #6 of the thread "The Rumanian cockade was blue (inside)-yellow-red (outside) from the very beginning, inspired by the French national markings. Only the type of film used back then made light blue look light and golden yellow look dark - just as depicted in the above photos."
So now I'm really intrigued. Why do your two photos show different colours?
Regards,
Clint