Fix incompatible pointer type warning in rgbArray, rgbaDictionary, hsbaArray, and hsbaDictionary

Changed the (r,g, b, a) and (h, s, b, a) used in rgbArray, rgbaDictionary and hsbaArray, hsbaDictionary respectively from floats to CGFloats to silence incompatible pointer type error.

![screen shot 2014-01-05 at 6 04 23 pm](https://f.cloud.github.com/assets/3321592/1847658/0541374a-765f-11e3-8676-c37fcc4c90e4.png)
![screen shot 2014-01-05 at 6 04 53 pm](https://f.cloud.github.com/assets/3321592/1847659/054544e8-765f-11e3-88ba-f0c9efd8ec2b.png)