Thanks for the answers guys, so in summary, Darbee cannot handle 36-bit color depths. Are they going to fix this in the near future and if so, when will that be?
Now, as to the setting of 36-bits, that's fine if no image processing is going on in your entire video chain. Yes, your source BD/DVD pixel is recorded at 8-bits. But then, that pixel can be digitally manipulated by the players DSP modes to be greater than 8-bits. Heck, I'm sure even the Darbee algorithms go through basic mathematical computations such as multiplications and divisions which increase the intermediary results to greater than 8 bits.
If you multiple an original 8-bit pixel with an 8-bit constant or variable, the end result will always be 16-bits. Truncating or rounding this 16-bit result back to 8-bits(Deep Color Off) could result in severe rounding errors. Now whether these errors are visible or not to the trained/professional eye is not the point at this time. Hence my preference of choosing to round it off to 10-bits/pixel (30-bits total) or 12-bits(36-bits total) to lessen the resultant errors.
Am I missing something here? It seems to me the argument for "Deep Color On" is rather obvious when using the Darbee with its sophisticated image processing algorithms.