Financial-Times/o-colors — pull request #58 by AlbertoElias (2014-06-23 21:11:09+00:00)
Title: Updated demos and addedsetusecase mixin

You can't do this as a normal function like I mentioned in issue #56 so I did it as a mixin. It would be used like this:

```css
@include oColorsSetUseCase(email, text, grey-tint-5);

p {
color: oColorsGetColorFor(email, text);
}
```