Does it support textmate/sublime style syntax highlighting?

How do I actually get it to do anything? Clicking on a github project in the list does nothing.

Ok, I clicked fork (I don't think this is intuitive at all, why would you want to fork your own projects?), and I'm editing code.

Things that would prohibit me from using it:

* Can't upload my own tmTheme files.

* Cant't seem to change font, ignores my browser's "monospaced" selection. Why?

* Can I select branch somehow? This is not obvious. Perhaps in the project pane?

So far it's pretty frustrating in all fairness, and whilst it's a cool idea, wouldn't really make me switch from Sublime Text + Cyberduck.