Goldenrod Crab Spider

As I watered our Scarlet Runner beans early this morning I was surprised by a bright yellow crab spider. 
I have found white crab spiders on several occasions, but this is the first yellow one. 
Today I learned these Goldenrod Crab spiders are able to change their color to camouflage themselves. 
They are so cool!
No doubt, this spider is hunting for one of the bumblebees that are busy pollinating the Scarlett Runner bean flowers.