The Sony NEX-6 has several apps that you can download to add functionality to the camera, such as using your smart phone as a remote shutter release. Picture Effect+ is one such app currently available for free from Sony’s online app store. The Picture Effect+ app enables some cool effects like tilt-shift and selective color. Below are some sample shots of the partial color effect.
The Picture Effect+ app allows you to select up to two colors and adjust the strength of each choice to adjust the masking. Adjustments and overall output are viewable in real-time. The app is usable in PASM modes, but can only output in JPEG. Understandable, since the camera is essentially doing post-processing on the fly.
Lighting and color selection settings most likely caused noticeable blocking and some missed areas of color. More patience and tweaking probably would have led to better results. An interesting tool to have regardless, and there are still many more effects to explore.