Our end goal is to get you the most survey responses possible while providing your survey takers the best experience possible. Design has a heck of a lot to do with that.
Right now we offer the ability to customize a few elements of your hosted survey: logo, background image, background color, button color and link color.
We've found that putting more constraints on what can be customized creates a better experience for everyone, plus it gets your more responses, and who doesn't want THAT?!!?