Add more colors (from http://developer.android.com/design/style/color.html).
Split user defined colors and default colors.
Ordered color list (user defined colors first).
Simplify the "Add new colour" dialog
Colours are validated by Color.parseColor(String) and therefore more flexible
FloatLabelLayout from @chrisbanes (https://gist.github.com/chrisbanes/11247418)
Delete user defined colours
Fix duplicate color
Merge pull request #11 from SimonMarquis/feature-more-colors

More colours :sp
fixes #10. Added option for using 24hr format