i think you could make this with tunisian. when it gets the the split, you could keep working half the stitches until both halves are long enough and then start stitching across the entire piece again at the other end.
this picture shows contrast perfectly. the African American man being dark skinned has gold hands around him. when you look at the picture you can tell it has contrast because their is a dark color and then a bright color wrapping around it in a way.