On the Goodyear Wrangler SRA's The paint and little rectangles are visible. With about 50 miles or less the paint is gone. With about 1,000 miles the little rectangles near the edge of the tread are nearly gone. With 2,000 miles and no tire rotation done, the right rear tire rectangles would be gone.
On the BF Goodrich Mud Terrain KM's The little hairs are all over the tread. With about 50 miles or less the hairs are almost all gone. With 1,000 miles they are gone but the hairs on the edge should all still be there. At about 2,000 miles the hairs on the edge of the tread start to disappear.
Above is how Wrangler tires show wear in the first 2000 miles of normal asphalt driving.
On the Bridgestone Dueler A/T's The nubs and paint on the tread is very visible. With about 50 miles or less the paint is gone and the nubs have some wear. With about 1,000 miles the nubs are very worn and hard to see. With about 2000 miles and no tire rotation done, the right rear tire nubs would be gone.