Union Blue Silk N Colors by The Thread Gatherer
Special note for this one: This is a particularly good color for samplers -- it's a golden brown with just a hint of green. Just a hint -- it really does look like the browns you see on old samplers.
I just love Silk N Colors -- Cece has been dyeing cool stuff for years. And I really feel like she captures some of those weathered colors you see in old samplers. You get five yards per skein, and the skein is 12-ply, which means you get a lot of thread to work with.