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On Jun 23, 2015, at 12:14 PM, Williams, Stephanie <[log in to unmask] <mailto:[log in to unmask]>> wrote:
> Thanks to Mike, I knew this was likely something to do with our JP2 library; I'm now pretty sure I've traced it back to a hard-coded frombuffer() setting--"L", for grayscale--in the NativeImaging module that Chronam uses to optimize image generation/broker image libraries.  I'm wary of the consequences of changing that, and will be investigating further.

Ah, this spot:

https://github.com/acdha/NativeImaging/blob/bad7425766bf1a4fd28452caf0afde9ab28d7a9d/NativeImaging/backends/aware.py#L220 <https://github.com/acdha/NativeImaging/blob/bad7425766bf1a4fd28452caf0afde9ab28d7a9d/NativeImaging/backends/aware.py#L220>
https://github.com/acdha/NativeImaging/blob/bad7425766bf1a4fd28452caf0afde9ab28d7a9d/NativeImaging/backends/aware_cext.py#L105 <https://github.com/acdha/NativeImaging/blob/bad7425766bf1a4fd28452caf0afde9ab28d7a9d/NativeImaging/backends/aware_cext.py#L105>

That code was developed to support Chronicling America which at the time didn�t have color content. It shouldn�t be too invasive to do something like use the number of channels and bits-per-pixel values to select the mode from the list at http://pillow.readthedocs.org/en/latest/handbook/concepts.html#concept-modes <http://pillow.readthedocs.org/en/latest/handbook/concepts.html#concept-modes>. Unfortunately I don�t easily have access to Aware to test this but if someone else does I can merge the change and push it out to PyPI quickly.

Chris