Hi Asher
It is is all about the light, the ambient light.
The shot was done during sunset in front of some kind of a small forest (our garden is situated on a hillside) below the garden. The sun light enlighted the silhouettes of the colombines bolls and the remaining petals.
Color was a bit manipulated in PS (with a little help from Doug Landreth's Photomorphis software) - that's it.