What doe the last color band on a resistor represent?

Answer:
It's the tolerance of the resistor - +/- 10% (grey), 5% (tan/orange), 2% (red), 1% (dark red/maroon), etc.
First answer by Littlewats. Last edit by Littlewats. Contributor trust: 64 [recommend contributor recommended]. Question popularity: 1 [recommend question].