Yes, I found when I switched to hunting exclusively with sidelocks, getting away from scopes does shave a little time off the end of the day...caused me to hunt a lot more at the beginning of the day rather than the end. I tried a couple flourescent type paints but the bottom line is even they need light to gather in the first place in order to work...settled on white fingernail polish as the best all around color in the woods for me.
One other option you might consider is the material used in night sights...they are actually tiny radio-active particles that glow in pure black darkness, last a couple years...can't recall the actual name...sitetron, nightron, triton, something like that...the material has been available for use in the sight pins on bow sights and in the front & rear sights on handguns for at least 15 years now.
You could buy a bow sight pin ($20)...snip off the tiny end that contains that glowing material, and with a toothpick dab of epoxy, glue it to the very top of your front sight, then rezero your ML.