Polarized

There's something oddly attractive about this theme, but I can't quite place it. It might be that yellow-blue is an impossible colour. This theme is unusual in that it's a flat theme with a gradient; all my other flat themes have solid colours.
Don't knock it until you try it. This theme actually works surprisingly well in practice (except maybe if you have blue-yellow colour blindness). Just make sure you look away once in a while.

Installation
Double-click the .themepack file to apply the theme.

Colours Used
ActiveBorder=120 120 136
ActiveTitle=192 192 64
AppWorkspace=165 165 90
Background=180 180 76
ButtonAlternateFace=120 120 136
ButtonDkShadow=60 60 194
ButtonFace=120 120 136
ButtonHilight=60 60 194
ButtonLight=60 60 194
ButtonShadow=60 60 194
ButtonText=255 255 0
GradientActiveTitle=192 192 64
GradientInactiveTitle=170 170 84
GrayText=101 101 154
Hilight=192 192 64
HilightText=0 0 255
HotTrackingColor=160 160 128
InactiveBorder=80 133 192
InactiveTitle=64 64 192
InactiveTitleText=192 192 192
InfoText=255 255 0
InfoWindow=16 16 240
Menu=120 120 136
MenuBar=120 120 136
MenuHilight=192 192 64
MenuText=216 216 38
Scrollbar=60 60 194
TitleText=0 0 255
Window=52 52 204
WindowFrame=60 60 194
WindowText=255 255 0