Straightaway Leg Knitting
Here's one way to pull off a few changes when you do the straightaway leg knitting. You can switch colors for the leg knitting.
For example, in the photo below, you can see Zauber Perlen. Perlen already comes in little balls of yellow and cream with some delightful color play.
I'm pairing it with Crazy Zauberball Color 2044 Green Week. Notice that I rewound the Green Week into smaller balls. Some start with green. Some start more gray. Fun!
I would use the Green Week for the heels and toes because it has nylon for strength. The Perlen little balls would be fun to use for the legs and feet. Cuffs could be knit in the Perlen yellows and cream, too.
The Perlen is 100% wool, so I would not use it for the heel and toe. Those areas need the nylon for good wearability. The Perlen color balls will make a great stripes that can be subtle or definite. I get to decide that as I choose how I mix those colors.
By using two skeins you have access to 200 grams of yarn and can knit longer legs for a pair of mid calf length socks. That flexibility is creative and versatile.