Natalie, If it's a light color, the optacon won't buzz because it thinks it's reading dark print on a light background; since the shirt is a light color, the image will be blank like a blank page. When it's dark, you'll have to use inverse video because the optacon sees light print on a dark background. Mary not to view the list archives, go to: www.freelists.org/archives/optacon-l To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.