As far as I can tell there's only one style option that doesn't work in batched mode, which is marker. Definitely annoying but a huge improvement because we actually only handled colors correctly before.
While the lack of support for marker is annoying and is something I will file with bokeh, every single other option now works correctly in batched mode including selection and nonselection colors/alpha, which I'm pretty happy about. Also added some tests, ready to review/merge.
Actually, in that case it would just be good to have a nice set of unit tests, starting simple and getting more complicated, covering all three modes. This is one of those cases where I feel unit tests can almost substitute docstrings...
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