I have been using the exportables feature for exporting my theme settings to the info file and it's working quite well! :-)
The only thing I find a bit annoying is the fact that every time I save the theme settings the Current Theme Settings status changes to Overwritten -- even if I haven't actually changed anything. And even if I have changed something, I don't always remember which option it was and whether I was just trying something out or whether I had changed a value that I actually want to keep...
As a solution to this, I'd like to suggest integrating omega tools with the Diff module, allowing the user to view the changes between values stored in-code and in the database... I'm thinking of something similar to what the features module offers for overwritten features.