Excellent example of a clean slider design. There is also a free PSD available too. Designer: Maki Myers Source: MakiMyers
This is an excellent example of slider design with an amazing colour palette. Designer: Liam McCabe Source: PixelsDaily
The bold green goes well with the dark form producing a great clean design. Designer: Matej Hrescak Source: Dribbble
This shows buttons that are bright and bold can stand out on a dark background. Designer: Ryan Johnson Source: Dribbble
This power button shows how lighting and can be used to give the button a 3D look that beckons to be pushed. Designer: Pontus Johansson Source: Dribbble
This is a great example of dark ui elements done correctly. Designer: Lukas Majzlan Source: Dribbble
Designer: Steinar Ingi Farestveit Source: Dribbble
This combination of Google maps and clean icons provide an excellent user experience.
A very clean design with a great minimal colour palette.