The black looks much better.
Since we mentioned text and word wraps and stuff, I gotta go on a little rant. This isn't directed at anyone, just a note for (hopefully) improving the aesthetics of any game.
It seems difficult to work with the default text boxes in the RPG Maker engines, because they are too big. This could make one line of text look too empty and a full box of text look like too much. If you look at any other game, text boxes are smaller width-wise and only use about 2-3 lines.
Part of that is the addition of a face, but I find that a slightly smaller text box with 3 lines looks a little neater.
Thankfully, there are a lot of scripts that help with that nowadays.