Joanna Socks have a beautifull double layer look. I made it with two colors but you can use one or even three colors if you like.

The pattern comes in five stitchcounts for the round. If you are use to knitting socks use the stitchcount you use for stockinette socks.
If not do a swatch!

You can adjuste the length of the sock for your size.

My samples are knitted with 64 stitches and in EU size 37 and I used approximately 30g of each color.