Wish: Multicolor gradient

I guess the topic says it all, but it would be nice with a multicolor gradient like the one in Illustrator. (For landscapes it would be good to set two colors of blue below the water line, then shades of earth and green and then gray and white for planes and snow filled mountains.

And it would be great to have a gradient to control multiple materials, not only single colors too. But that would require a node based material editor.

Got that, thanks.