The dye color is typically a shade of blue. Phthalocyanine is almost transparent while Azo is dark blue. However depending on the UV stabilizers that have been added and the reflective surface the colour changes to Green, Gold, Silver, Platinum or maintains its blue color. But what about the other colors White, champagne and others. They are not dye colors but rather refer to the color of the non-reflective layer of the media and affect printability or are caused by a color pigment added to the transparent polycarbonate substrate.
Some media is designed to be thermal printable and some inkjet printable.