"And as for the discussion about off-camera flash and gels and such ... please continue and enjoy your discussion folks but it is obviously not of practical application to me!"
And there in lies the problem I have with so much of RLP's
opinion, whilst it might be valid or correct information in and of itself, he seems incapable of parsing his knowledge into relevant information for the OP. The answer to every lens question is not 135 f1.8 IS or 50 f1.2. The answer in this thread is not to buy green gels. This has sometimes made me appear to be on a RPL witch hunt, and that absolutely is not the case, but I am passionate about pointing people in the right direction for them
and can be outspoken if I think they are being led astray, of course I make mistakes, I have made several howlers here on CR, but I like to think when I do I just say I am wrong, and I have done that several times.
Interesting use of a blue gel, but as Neuro says, not a generally pleasing outcome from the OP's objective, the guy in the background looks nuclear, the ceiling has been painted out of two buckets of paint that were different colours and one of the main subjects looks unwell. Very far away from the OP's intention. Still interested to see your best use of a green gel, one of the ones you specifically recommended.