A: Removed the stencils and fur, and made the socks recolorable.
B: Removed the knee warmer and fur.
C: Took the knee warmer texture out and made it into an accessory. It is found in the socks category and available for both genders from toddler to elder. Preview of teen and adult use is here.
Both A and B have default replacement and non-default versions, but you have to choose only ONE default replacement.
Default replacement is for those who have installed the clothes as sim3pack. Put the file in your Overrides folder and it will work. Non default includes mesh, so you don’t need the original store files for this to show up. You can also install both original and non-default versions at the same time.