I think the hot pink is definitely warm enough. Interesting against the cooler background (which has enough green to also warm it up a little). Good DOF, and I like the composition, too. Congrats, you did well, especially considering it's a flower shot (there's a lot of them in case you haven't noticed).
This is an amazing flower, love the curls that appear on this. The bee is nice and black with a good contrast. The hot pink against the cool green works in your favour.
I would say almost that the flower is overwhelming your main subject, if you shape your left land into a L and crop the picture right up to the more whitish of the plant, you have a more dramatic main subject.
Your lines are clean and sharp, the colours are outstanding, you have managed to get a nice sharpness about all the aspects but no halos from over sharpneing, very nicely done. The title does help to determine that it is a bee, I first thought it was a fly. Doesnt matter either way, bee/fly works well.