2.2.5 breaks SliderPicker active state
With 2.2.5's release, the `SlidePicker`'s active state no longer triggers on the active swatch.

Screenshots indicating the problem. The middle value is selected in both examples:
#### 2.2.2:

![screen shot 2016-08-24 at 13 14 45](https://cloud.githubusercontent.com/assets/192263/17946395/fccb70fa-69fc-11e6-8341-545825983bce.png)
#### 2.2.5

![screen shot 2016-08-24 at 13 08 26](https://cloud.githubusercontent.com/assets/192263/17946416/123fb504-69fd-11e6-8059-a6ed6d9b69b8.png)

It doesn't matter if I pass in hex, hsl or rgb values as the `color` prop. This could perhaps be related to https://github.com/casesandberg/react-color/issues/28, where picking the last swatch doesn't activate?
