Hello! You cannot get involved directly but by submitting your image into may 7 World's Continents Photo Challenge that I run on daily basis. From there I pick 1 image every day that I submit for the color challenge. In return, the participating steemian and his image gets an extended publicity in my post as well as a decent upvote on one of his posts. For more information on how to participate in the 7 World's Continents Photo Challnge check my blog for more information and the guidelines for the challenge. Thank you. Tomas