Finally, the color: pick whatever shade kayak you want! The fish will certainly not be scared away by a particular shade, so select whichever one you such as. It could also be far better to choose a brighter shade, because that will certainly make you much easier to situate in an unexpected emergency and more noticeable to various other watercrafts.
Lots of people, particularly novices, are generally better off with an inflexible kayak. Inflatables do have their uses, but rigid hulls are merely much more flexible - specifically if you intend on going out on the open sea. An inflatable kayak would certainly not be my front runner if an interested shark chose to take a test attack from my kayak!