Blended the swamp/jungle colors, added steam to mouth of the lava flow, added the rest of the labels and roads, and recolored the labels.
I'm uncertain about the steam. To my eye, anyway, it's not bad enough to be clearly worse than the map without steam, but it's not good enough to be clearly better either.
I'm also not happy with the new label color. I've yet to find something that looks as good as the red. I think a key problem is that I want the whole map to use the same color label, and most of the other colors I tried clashed pretty horribly with something. I've uploaded two versions with my two favorite label color schemes, or if someone has other label color suggestions, I'd be interested in hearing them.