=== mercurial-0001-0001: graphmod.colored list.index vs dict O(k^2)->O(k) ===
N=1000  k=50  : defective=60.242ms  fixed=10.084ms  speedup=6.0x
N=1000  k=100 : defective=207.142ms  fixed=18.347ms  speedup=11.3x
N=1500  k=200 : defective=1154.546ms  fixed=52.559ms  speedup=22.0x
N=1500  k=350 : defective=2932.315ms  fixed=78.024ms  speedup=37.6x
N=1500  k=500 : defective=4798.280ms  fixed=95.837ms  speedup=50.1x

