I used US 3 for the thumb and US 2 for the rest.

Here’s the color order for the mitts.

Part - 1Thumb - Green

Part - 2 (Note the MC is changes)

Down#1 - Blue
Down#2 - Green
Down#3 - Blue
Down #4 - Green
Down #5 - Blue

Up#1 - Blue
Up#2 - Green
UP#3 - Blue
Up#4 - Green
Up#5 - Blue

I have learned not to stop during the kitchner section either… 50 sts…. It’s more than socks.

With three color changes, there were a lot of ends to weave in…. Have fun.