CSS border

Now, I know you can set different colours for the different borders (top, right, bottom, left), but is it possible to set two different colours on the same one? I'm thinking, with a 2px solid border, I could have the top 1px line one colour, and the bottom 1px line a different colour.

Google's bringing up a load of useless websites, so I'm asking here

Not all that desperate for it though

Edit: Never mind. Apparently this is possible by setting the border-style to groove (border-style: groove. Or, if you want it for one border: border-top: 2px groove #color; )

oh gosh. css is the only part of web design that I almost failed.