Sunflare. It's a special kind of backlighting that happens when you put your subject inbetween the sun and your camera. It usually happens in the late afternoon (except for you odd early birds among us!), and the results range from colors that look like the lemonade of late summer, to wild lens flare, to silhouetted backlight.
The general idea is to face your camera west at sunset, and put your subject somewhere between you and the sun.
Keep the sun JUST slightly out of the frame, and here's what you get.
A warm, hazy, glowey photo and a subject who glows with a ring of sunshine! (Notice a tiny big of lens flare starting to creep in on the bottom grass? Look for the circles!)
Aim your camera up slightly, and let some of those direct rays into your lens, and your lensflare (the refraction of the direct sunlight on the glass) begins to really show itself!
Get your subject DIRECTLY between the sun, and you'll see some pretty fabulous sihouettes!
And just in case you need to "see" what I mean, as usual, my girls were willing to offer two minutes of our afternoon to demonstrate!