We are playing around with a Canon 100 2.8mm Macro lens. I will say a lack of IS has proven difficult for me because I had tons of "barely out of focus" photos.
This is a test to see if we want to keep the lens. Previously I've been shooting macros with my Tamron 70-200 2.8 G2 which, thank goodness, has IS.
FYI: the first photo really had blue/green leaves. I went back several times to the original image to make sure I wasn't nuts.