Hi Ladyhorse,
As far as I know, the only real difference among different honeys is their flavor, along with colours, of course...clover being the very most popular one. Wildflower honey seems to mean just about any honey from a mix of wildflowers, rather than one specific flower. So the flavour as well as colour can vary greatly.
If you get the opportunity, do try some honey from fireweed...it's quite unique and delightful, a tall spike of pinkish flowers that like to grow in open forestland of the Pacific Northwest, where I was born. Fireweed is often one of the early plants to move in after a forest fire, thus its name!
When I lived on Mt. Baker in Washington State, one beekeeper would even haul in his hives each summer for several weeks as the fireweed bloomed on my friend's homestead, just to get that special honey!
Got a link for you...http://www.benefits-of-honey.com/honey-varieties.html