The fall foliage on the other side was heartbreaking in its brilliance. They watched as the Dome’s dirty surface rose swiftly into the air. The fall foliage on the other side was heartbreaking in its brilliance. Question: in its brilliance --- In this case, ‘in’ is a) used to indicate the conditions that are around someone or something; b) used to indicate the color of something; Which one is correct in this case, a) or b)?