Bonaire Blenny - dark upper lip

I was just getting in the water at sunset when I spotted this one sort of "walking" on the sand. Pictures were taken before I had time to adjust strobes and camera settings, unfortunately. Lots of green and blue in the fins. It was certainly dusk/dark at this point, so there could be night coloration changes going on here, but that lip!

I'm pretty sure this one pushed a female sailfin blenny out of a hole to hide...

Maybe it's a cross-dressing female sailfin blenny wearing a mustache disguise...

Les Wilk looked at the photos and thinks it is a female sailfin blenny with a weird lip.

So much for my hope for discovery of the mustache blenny.