I really like the look of the default theme (Mercurial), but I find the colors much too light. There isn't enough contrast. I made my own tweaks to the CSS, but I don't want to have to modify the package every time there's an update. Could you provide a theme with black text on a white/grey background please? Or perhaps just a version with all the text darkened 20%? (That's what I did)

I see that zMous also exists, but its light scheme also has too little contrast. I understand if you don't want to clutter up your theme list, but it can't hurt to ask.