Purple Euro Flap A6 envelopes made using exclusive paper from the Gmund Color System. This Gmund Colors (63) called Grape is a dark eggplant color that feels as elegant as it looks. Order blank to print at home or custom printed by the professionals at LCI Paper. Grape envelopes can be printed using our white ink technology. A6 deep neck envelopes measure 4 3/4 x 6 1/2.