We played at judging the orchids in the show, trying our hand at picking out the best plants of every category, and awarding them a ribbon. You guess it: blue means first, red second and white third place.
Then we chose the best plants of their class, and awarded these a yellow rosette.
Finally, the best plant of the show and the best cultivated plant got a multicolored rosette. 
We also gave some plants green ribbons: they were not good enough to get a "real" ribbon, but had definitely some special merit.