I was stealing them from my wife and daughter. Finally got caught. Now I head to the dollar store or Walmart. It is weird standing in the nail isle checking out the colors when another women is also there.
It's a great way to meet chicks.
Don't tell my wife.
Real men buy their own cosmetics.
But seriously, I just use clear. I like it because it tends to make white thread go almost transparent and the colors of the underlying materials show through.
I also learned to tie with something close to the correct color of thread. It just keeps things more interesting. Nothing wrong with using whatever color, but I just use clear.