So far, started it three times, had it silently exit without being asked three times. No Style tab available, no findable way to change that ugly white on black. Such promising, currently unusable. OS X 10.8.4.
To change the skin/theme you can put the following in your user behaviors:
:app [(:lt.objs.style/set-skin "light")]
:editor [(:lt.objs.style/set-theme "codemirror")]bootstrap.js[16107]: nil screen-dark.css[43]: Invalid CSS selector: #content ol li::marker