I have been trying to get to it...sorry it's taking so long. We are absolutely slammed. If you can find someone before I can get to it, look for someone that has the capability to print on a white permanent adhesive vinyl with a grey tinted adhesive (Orafol 3651 is a good one for mylar sails). If someone suggests a simulated carbon fiber vinyl material, stay away from that - they're usually very stiff, some are foil based, and I don't think they will hold up well on sails. As I learned on Laura's boat, if the printing is going to be light colored, use a black vinyl under layment to cut down on light transmission to make sure they're easily visible when backlit by the sun.
If both my employees show up tonight (fingers crossed), I'll be able to get this cooking tonight.