I love this Petra song. It's been a standard for youth song services where I've played. It's not hard to play and the words are quite lovely. My Primary Sabbath School kids requested The Coloring Song almost every week. We even got a bunch of rhythm band instruments and they used to do this drumbeat/cymbals sort of thing in time with the song. It gave it a Celtic kind of sound. All we needed was for someone to learn the recorder line for the opening and chorus.
Tom