advice sought from boating birders

["Travis, Ginger" <Ginger@athena.dev.unc.edu>]

Fellow canoeists, kayakers and johnboat birders:
I'm about to buy a new kayak for longer, more efficient birding trips in
swamps and on lakes and estuaries. 
My question: How much does color matter, if I want to get as close to birds
as possible? 
I'm looking at a heavily discounted bright-yellow kayak. Will it scare the
wildlife? 
If I pay more, I can get a new boat in a color of my own choosing, such as
green or light blue. I'm willing to pay -- up to a point. I just want to
know: Does color REALLY matter? If so, which color is best for a close
approach? 
Probably best to reply to me privately. 
Thank you for any advice you care to give.
Ginger_Travis@unc.edu
Chapel Hill, NC