Custom mats are available only in combination with ordered prints. For sizes not listed, please select the next largest size that would include your mat dimensions then state the size of print and the size of mat desired in the description field. For special orders requesting a different colored mat (include MFR and exact color), double mats or any other special mat require communication via the contact form. I will respond as quickly as possible. In general, I cannot economically do single mats in different colors, but can do larger quantities of mats in different colors.