Angular Colorpicker

An angular colorpicker for use with angular views. Fashioned after [jQuery Minicolors] (https://github.com/claviska/jquery-miniColors/).
Would it make sense to make convertCase() a local method that uses the `options` that is scoped w/ it?

```
function convertCase(s) {
  if (options.lowercase) return s.toLowerCase()
  return s.toUpperCase()
}
```