Purchase an awning with tropical colors or one you can easily convert to a tropical theme, such as a bright green or yellow. If you already have the awning, paint it tropical colors to match the tropical theme. For example, if you want a palm tree theme, you might want to paint the awning green to match the palm trees. Choose paint depending on the materials your awning is made of and any products it is treated with. Consult the awning manufacturer to find out what type of paint will work best for your awning.
Stencil tropical designs onto your awning. Apply stencils in a bright color that contrasts with your awning to help further create the tropical look, especially if the stencils are tropically themed. Stenciled flowers, palm trees, flip-flops and coconuts can all help emphasize your tropical decor.
Hang tropical plants and decor from your awning. Tropical plants and flowers, either real or faux, can help give your awning a tropical appearance.