grey - 707c7c, light teal - 83c5ba, apple green - 93d300, pale yellow - F9ea62, with no black or white, which was initially forbidden.
This design can be resized larger or smaller. In the contest view the hummingbird is approximately 6 inches tall. I can size it up to a huge 12 inches (approximate), or much smaller. I will probably resize the design so the hummingbird is approximately 3 inches after the contest.