When choosing how to paint your glasses, look at the different parts of the frames. Paint each part a different color if you like.
If possible, take the lenses out of the frames so they won't get paint on them. Paint the background color and let it dry. Give it two or three coats. Always make sure the paint is dry before applying another coat of paint.
When the background color is dry, add stripes or dots in different colors. Use a tiny paintbrush to make stripes. Use the handle end of the paintbrush to make dots. Let the paint dry.