In "Silver on the Tree" by Susan Cooper, Bran questions the contrast between the Riders of the Dark, noting the stark difference in their attire—some wear white while others are clad in black. This observation prompts deeper reflection about the nature of extremes and duality. Will suggests that perhaps the Dark represents polarized views, where people become either overly idealistic or trapped in their own negativity. This dialogue highlights the theme of balance between opposing forces. It implies that the Dark influences individuals either by blinding them with their own brilliance or confining them in despair, suggesting a need for moderation and awareness of these extremes. Together, Bran and Will's conversation invites readers to consider how these contrasts shape personal and collective experiences.