Create color.html.twig

[jjui]

Extends input types with color.

NOTE:
Input type color needs a height eg height: 2.663rem; (equal to other inputs).
Works with inline - but preferred to be set in admin plugins _forms.scss for all similar inputs.

@flaviocopes spoke about this, it is certainly a theme thing.

[flaviocopes]

Closing as being poorly supported by browsers http://caniuse.com/#search=color, so it cannot be reliably added to a form.

[w00fz]

FYI we are planning to add a proper color picker field which will be cross browser and not relying on the really awesome but not yet fully supported color type.

[jjui]

Beautiful @w00fz & @flaviocopes, looking forward.
Would be very helpful to be able to declare some default colors - like the one used on OSX!
Colors is now day part of the profile and sometimes very nice to hand-pick some for the user :)