It is possible, I suppose. Here are the two scans I did; as and when I got the inks so there is a bit of a time gap between them. As with all my scans though; once they are done they stay in the dark, as it were.
First the 'original one.
I can see the teal in this!
Then the R2 version.
I think there is a significant difference. There is another ink that falls somewhere in between - Diamine Twilight.
And there you have it - my two-penneth worth.
Mine looks a bit darker than the first one (then again it's in a medium nib with a fairly fast flow, so perhaps it would) but is definitely closer to that than the second one. Probably old stock then. Thanks for that, a very fast helpful response!