I started designing a theme for ST2, with inspiration from the awesome theme Soda.
It's mostly complete, but the only problem is that I don't have the experience in actually bringing it to life, so if you happen to know how to create a theme for ST2 and you'd like to collaborate with me, drop me a PM.
The theme will suffer additional changes to improve it, especially on the code highlighting. So you can view it below:
Open the image in a new tab to view the full design.