Isaac Kellis - Orc Warrior

Josh_Hilton_Orc_Character_Grayscale

I tried to beef the character up with more metal, new mask, bigger steam punk"ish" tubes, and explosives. Comments would be much appreciated. :)

Samuel Reyes - Orc Soldier Grayscale Dynamic Pose

Photoshop - Color Wheel Plugins

Links below lead to downloadable plugins you can use to install a color wheel like the one below directly in to Photoshop.

Len White Color Wheel

Coolorus Color Wheel ($9 for 2 computer license)

Complimentary color example

Kuler

Just posting a link to the web app of Adobe Kuler, found here.
It's a color wheel, and has preset color rules.