Add color options

I modified the code to put color in the options list using only the attribute "data-color-option" in each option item. This could become a new feature?

Data attribute:
![Data-attribute](http://i.imgur.com/gCRryRG.png)

Options:
![result1](http://i.imgur.com/aeJpgTS.png)

Selected:
![result1](http://i.imgur.com/1RfDHum.png)

Code:
The modified parts is in the 69, 252, 253, 948 lines.
[Pastebin Code](http://pastebin.com/u2Ln9m8t)