Because what the heck, right?
Anyway, if you want to make your own Stripey Mitts, here's the general scoop. And by the 'general scoop' I mean this is How I Made Mine. Your hand size and gauge may vary.
Fingering Weight Stripey Mitts
Patons Kroy FX in Clover Colors
Patons Kroy in Black
Knit Picks Palette in Garnet Heather (the Palette is noticeably thinner than the Kroy, but it works out ok)
US 1 (2.25mm) dpns
My gauge appears to be 8 1/2 stitches per inch. I would say these mitts would fit a ladies small or medium hand. My palms are about 7.25 inches around.
Here's what you do:
Cast on 57 stitches, join to knit in the round. Don't twist them!
Knit 5 rows seed stitch.
Start striping! I did five-row stripes, and you'll probably want to do jogless joins, where you knit one round of the new color, and then on the first stitch of the second round of the new color you pick up the stitch below it (in the old color) and you knit those together.
Knit stripes for as long as you'd like your cuff to be. My red-and-rainbow mitts have seven stripes before the thumb gusset.
Now decide where you want your seam to fall. If you're jogless joining, it won't be much of a seam, but I like to put them on the palm of the hand anyway. So for one hand you'll want to start your gusset about sixteen stitches after the start of the round, and on the other hand you'll want to start sixteen stitches before the start of the round.
For the gusset, knit to the desired spot, place a marker if you want, and then M1, K1, M1. Knit two rounds. Repeat these three rounds--still striping!--until your gusset is the size you want. I increased to 19 stitches, at which point I was about halfway through the red stripe. I finished the red stripe, not increasing any more, knit one round in the rainbow stuff, and then on the next round put the 19 gusset stitches on waste yarn, cast on one to cover the gap, and striped to the end of the mitt.
For the final stripe, knit one round plain, five rounds of seed stitch, and bind off.
Now go back to the thumb and put those stitches on your dpns. Pick up two stitches to fill in the gap, and knit the four rows of rainbow stripe, decreasing a few stitches if you need to to make it fit. Re-attach the red, knit one round plain, and then three or so rows of seed stitch. Bind off, sew in all the ends, and there you have it!
Clear as mud, right?
The worsted gloves are pretty much the same, only I cast on 36 and did stripes of four, with two or three rows of garter stitch as the 'cuffs.' ETA: Oh, and unless you have ginormous thumbs, you'll probably want to keep the gusset around 13 stitches. :)