Just use the photo in a new post on Sunday, with the same or new information, and use 'colorchallenge' as your first tag. Photography is a good second tag, then choose whatever you prefer for the last three. There is a colour challenge for every day of the week; Monday, red; Tuesday, orange; Wednesday, yellow; Thursday, green; Friday, sky blue; Saturday, indigo and Sunday, purple. Check out the colorchallenge tag to see what others are posting. Have fun!