I'm designing a website, and I need to allow the user to change the color of some elements. I will have to implement a color slider. I've got 2 different kinds, and I would like to know which is most user-friendly. Also, do they have a name to them? How can I refer to them?
I'm not talking about the design, I'm asking about the fact that in the first image, the color changes as you slide it, while in the second image, the color always stays the 'correct' color. Which is easier to use, and more user friendly?