"분홍 선글라스를 쓰세요."
Translation:Wear pink sunglasses.
쓰세요 in this context is to "use" the said item. Which means for us to "wear" the "pink sunglasses."
쓰다 has many meanings and usages. In this context, it refers to wearing them, not using them. If you say, "Use pink sunglasses.",that would be "분홍 선글라스를 사용하세요."