There will be more to point out later, but the slide show (click here to view the video) speaks relatively well about what we have been doing the past three meetings.
We have been tweaking the mechanism slightly to add stability and a more professional look, but most of what we have done is work on the color detection algorithms.
We did a major refactoring on week 13, changing a high-low match with a +/- "fudge factor" to a waterfall design where a maximum value for each color is evaluated before the color is determined or passed on to the next color condition. (Hope that's enough detail. I will try to get an NQC sample up in the next few days.)