Kiandra has recently announced the open sourcing of Delta jQuery UI theme that youÃ¢â‚¬â„¢re going to love. ItÃ¢â‚¬â„¢s free for commercial, personal and educational use as part of the MIT or GPL license.
The theme makes use of CSS3 gradients and some @2x images to ensure itÃ¢â‚¬â„¢s retina display friendly. The vibrant colour scheme means Ã¢â‚¬Å“DeltaÃ¢â‚¬Â works on both light and dark backgrounds. Change the toggle in the top right hand corner of the demo to see it in action.
This theme can act as a starting point for other smart cookies to create their own visually engaging jQuery UI themes. You can fork this theme over on the GitHub repository.