Liner Neutral

When did Mary Kay stop making their wooden lip pencils?

I bought a few on ebay, in these colors:
knock out neutral
poppy
primrose
best berry
strawberry
tangy tawny
melon
Just hoping an MK consultant could answer if I posted the colors to help figure out the collection, lol. Just wanting to know so I can figure out how long these liners will be good for, thanks!

I have been a Mary Kay Consultant for almost 5 years and never heard of these pencils so they must be pretty old. Even if you could find more not sure i would recommend using them.
We did have lip crayons about a year ago they are different but I still use those.