using RGBA format since KCB uses that as default color source format.

currently this serves as a place for discussion, and hopefully I can understand what is happening.

It turns out the ofxKCB by default sets the color source to provide RGBA data: https://github.com/quinkennedy/ofxKinectV2/blob/master/src/ofxKinectCommonBridge.h#L60

so I was seeing black frames instead of color, with this fix I am seeing color frames appropriately, but I don't think this is currently a general solution.

1. Are the [shaders](https://github.com/quinkennedy/ofxKinectV2/tree/master/shader) associated with ofxKinectV2 actually being used?
* Is the real solution to this simply to base the GL_Format in this loadData line on the pColorFrame->Format?