You've seen the photo effect everywhere, but perhaps couldn't call it by name: The original color has been drained from the photo, and replaced by a dramatic blue-ish, yellow-ish, green-ish, or purple-ish color cast. This is called a duotone, and it's been a favorite of Photoshoppers for years.
In the full-blown version of Photoshop there's a specific command for this effect; however I'm here to tell you that it's easily recreated in Elements. Oh yes, dear grasshopper; let me show thee how :)