Another interesting thing ... a quote from Tolkien's book Roverandom [rover is a dog]:
"If Rover had not been so busy barking at the balls, he might have notived the blue feather stuck in the back of the green hat, and then he would have suspected that the man was a wizard, as any other sinsible little dog would; but he never saw the feather at all"
... Tom Bombadil also wears a blue feather in his hat
not really lol, i examined it ages ago looking for the 'toilet' that kit was so obsessed with....
anyway..... i think goldberry is yavanna
as if you read the bit in the silmarillion that explains all the vala she seems alot like her....tall, dressed in green, stood in the waters (found with the reeds)