A lot of similar watches can be found on eBay and they are collectively known as "Mumbai specials". There are only a few vintage Omegas that come with other dial colours than the usual, conservative styles(silver/gold/white/black...), most that are either bright green, yellow or such are poorly done redials.
If I am not entirely mistaken, I recall reading a thread on here where someone wrote about how Omega did infact, produce watches with yellow and green dials, so not every yello or green dialed watch is a Mumbia Special, although the likelihood is that, more often than not, it is.
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