Rio Grande Colors $4.00 Kristin’s pastel images are on white cards with white envelopes and are blank inside. They are 5 1/4 x 7 1/4, and packaged individually in clear cellophane sleeves. Rio Grande Colors quantity Add to cart Category: Heartoons®. Tags: artistic greeting cards, greeting cards, past, pastel, pastel art cards, pastel greeting cards, unique greeting cards. Related Products Summer Dogs $4.00 First Mountain Snow $4.00 Hearts $4.00 Full Stream Ahead $4.00