Here the different colours of the wolves represent the contrasting characters of hamlet and Horatio. Hamlet is bawdy, a leader and quick to react, whereas Horatio is a follower, thinker and quiet. the wolves also show pack mentality, which relates to the way that Hamlet and Horatio always have a plan together and are mostly together.
"You're nothing to be afraid of; you're only a boy with a sword. You pretend to be king, but truly you are worth less than a beggar's brat, with about as much courage. So show me. Show me what they're all afraid of."
"You think you have memories... A farm, a family, an air plane, a crash; And then this place. Was there really a family? Did that air plane crash or was it hijacked? Forced down. Forced down by something less than a man; Something bred to sleepwalk through life until they are activated by a simply phase spoken by their kindly master."