Evolution 101: Prey colouration of sock to match background

For any Darwin doubters out there, the sock in Figure 1 is only two generations removed from those shown in Figure 3.

Figure 1: Adaptive mutations shown in man's sock, sockus manus. 

 Figure 2: Same effect, but as seen in moths

Figure 3: sockus stupidus

Sockus manus is native to a garden in Crouch End, London, but a closely related sock was recently found in a roadside puddle in Leeds.

Researchers have applied for funding to buy GPS tracking devices, which they will attach to the socks, so as to determine their migratory and mating habits.