These settings represent the options in Color section of the Preferences dialog.

Setting Description Type Default Value On Prefs
Dialog
panel.background Front Panel RGB B3B3B3 (medium gray) yes
diagram.primColor Background color of primitives on diagram RGB FFFFCC (light yellow)  
diagram.background Block Diagram RGB FFFFFF (white) yes
scrollbar.foreground Scrollbar thumb and arrow button RGB D4D0C8 (light gray)  
scrollbar.background Scrollbar RGB D4D0C8 (light gray) yes
coercionDot Coercion Dots RGB 666666 (dark gray) yes
menu.foreground Menu Text RGB 000000 (black) yes
menu.background Menu Background RGB D4D0C8 (light gray) yes
blinkFG Blink Foreground RGB FFFF00 (yellow) yes
blinkBG Blink Background RGB FF0000 (red) yes
cursor.foreground Presumably the foreground color of the cursor, but I don't see an effect when I set it on a PC.      
cursor.background Presumably the background color of the cursor, but I don't see an effect when I set it on a PC.      
execPalette.foreground Presumably the foreground or text color of the toolbar, but I don't see an effect when I set it on a PC.      
execPalette.background Background color of toolbar RGB EFEFEF (very light gray)  
menubar.foreground Menubar text RGB 000000 (black)  
menubar.background Menubar background RGB D4D0C8 (light gray)  
moreColors Sun platform - Provide Extra Colors
Other platforms - see Undocumented list
TF False Sun only

On Prefs Dialog: Settings marked "yes" in this column are accessible on the Preferences Dialog. Other settings are "undocumented" and can only be changed by directly editing the labview.ini file.

Transparent: Some settings can also accept the value 1000000, which is the hex value for transparent. LV5 and above also recognize the keyword "transparent" when used in place of an RGB value.