Bass- as in the Fly Tyer mag per David Martin's instructions, I used deer hair over wrapped with thread. No Pantone markers at my house, hence the metallic marker and nail polish finishes.
That very cool french manicure kit from Target has dual ended polish containers; one is a brush, the other is a very fine squeeze point that is also good for painting eyes on minnows.
I got it for the black and white tubes, but the pinks and reds have their place.