Someone could produce a test pattern demonstrating the effect with and without, but I haven't seen one yet.The sad truth is that Blu-ray and DVD use the same rather limited 8-bit greyscale and color gamut. Whatever setting you choose is automatically saved in Setup.For example, any time color up-sampling, color space conversion, brightness and contrast adjustment, and other video processing is applied to the 8-bit/channel signal, the result can have fractions.In an 8-bit system the fractions are truncated, but in the Deep Color mode the fractions are preserved so the data delivered to the display is more accurate.
Starting in 2010 more and more titles with BD-Java are featuring an automatic resume point.
Deep Color (which ought to be called "greater than 8-bit color") provides a finer gradation of shades between the colors encoded on the disc.
It is conceivable that Deep Color might reduce banding in some images, although I never see banding in real films (as opposed to cheaply produced logos and fx screens).
We do not have details on the frame rate conversion algorithms.
See the List of Blu-ray movies authored in 1080i50.