Thought I'd chirp in and post some observations that may help newer people out. I tried D-nice's SM adjustments (including R,G,B lows) with the MID color temp. I've always used LOW temp (since last July) with the red high turned down in SM and thought I'd compare. I watch everything in MOVIE mode cause for personal preference I find it less "noisy" a picture (PWM noise or something).
If you like a more film like quality to your viewing then go with the LOW temp and turn down the red high in the SM.
If you prefer a more video quality experience go with MID and D-nice's SM adjustments.
-Low temp definitely adds a slight yellow cast to the picture.
-I find low temp requires DRE at low to get good HD depth to the picture.
-The MID temp adjustments greatly reduced grain I would see in sky shots such as most ariel pans in CSI Miami
-However I find it increased grain in some dark shots of peoples faces (will have to observe more I think this was crappy feed watching L&O SVU)
-Like I said no DRE required with MID and I boosted my contrast 2-4 clicks for a little pop
-Bastketball and baseball looked more realistic in MID
-Overall I think the MID temp is a cleaner picture
I can recommend either color temps to anyone and just say it will all come down to personal preference.
Here's my settings for anyone who wants to try them. I use these with a Motorola 6416 STB and my PS3, they seem to be a good balance for both. I see very little difference between D-nice's User mode settings with the MID SM tweaks and these Movie mode ones. I'm sure there's better reasons for the User ones (gamma curves etc) but like I say it's personal pref here.
MID COLOR TEMP:
R high: (+3)
G high: (no change)
B high: (-10)
R low: (-12)
G low: (no change)
B low: (-13)
mode: movie
contrast: 40
brightness: +1
color: -4
sharpness: -15
tint: 0
film mode: standard (advance for 1080P/24 movies)
text op: off
dre: off
black level: off
acl: off
enhancer mode: 2
gamma: 2
color temp: mid
cti: off
3dnr: Low
field nr: off
------------------------
LOW COLOR TEMP:
R high: (-10)
G high: (no change)
B high: (no change)
R low: (no change)
G low: (no change)
B low: (no change)
mode: movie
contrast: 36
brightness: +1
color: -4
sharpness: -10
tint: 0
film mode: standard (advance for 1080P/24 movies)
text op: off
dre: low
black level: off
acl: off
enhancer mode: 2
gamma: 2
color temp: low
cti: off
3dnr: Low
field nr: off
Oh and if you choose to go into the Service Menu and you screw something up don't look at me.
ENTER AT YOUR OWN RISK!