When I use YCbCr the shadows around the THX logo are a dark black green. But with RGB theres no coloration.
Cheap TV or just badly calibrated?
As usual, you makes some good points Doug. The player settings are pretty well covered in the S390/S590 thread.
If you do use RGB mode, you should use 16-235 mode (often called Normal, or video, or standard if there are no numbers associated with the setting).
This is probably covered in the link above, but on the Sony S390, the different picture settings are invoked by pressing OPTIONS on the remote, and selecting VIDEO SETTINGS. The PICTURE QUALITY SETTING should be set to STANDARD by default, which is best. This feature is a little buggy on the S390 btw, so after saving the PQ Setting, I recommend switching the player off and then back on before attempting to adjust/calibrate the display.
I can't advise the OP on which HDMI color mode would be best for his particular display. The choices are YCC 4:2:2, YCC 4:4:4, and RGB, but the only setting that works with my older CRT TV is RGB. The color looks perfect in the RGB mode though since I updated the player to the lastest firmware (currently M11.R.0422). There's no more green push or green clipping. (Yay!)