Someone once told me to add salt to it to make the colour last longer - I know eventually the tea/coffe fades, but I think it might take a long time to do that.
Adding a little bit of ground cinnamon and nutmeg to black tea gives it a different tint than just black tea. Also applying it with a cotton ball or spray gives it a different look.
Many thanks Pitiknitz. The added spices sound like they would also make it smell lovely. And those particular smells would be so nice for a Christmas ornament.