word to the wise...take your patterns to Kinko's staples, what ever you have close and have them run a copy of the applique pages. that way you have your original and one to work from(cut out)...those tiny pieces have a way of falling into the trash, disappearing, etc ....
you will not have trouble changing colors...decide on your background first as you will use that the most, then find the colors you that require the most fabric..change those and then scrap up the rest with whatever you find that works!
have you tried to google the images for this pattern yet? or looked on Flickr???