Dialer: Proposal to amendment the look of dialer to fit kk

screen http://www.elelinux.se/elelinux/dialer.png

PS2: Added more options make it themeble for theme chooser

* Dialer background slightly darker
* Digits change the font

screen http://www.elelinux.se/elelinux/dialer_4.png

PS3: Reverted digits font change

screen http://www.elelinux.se/elelinux/dialer_5.png

PS4: Added some transparency hex color code in digits background as a proposal

screen http://www.elelinux.se/elelinux/dialer_6.png

PS5: Reverted back to PS3

* I've tried everything now and nothing gets better, so I think this will be the best solution

Change-Id: If393f0e2b57f3c55025dd029c86cb6a0bf24d4a3