Tint gelatin. Using Royal Blue icing color, tint reserved 2/3 cup gelatin mixture light green.
Prepare succulent mold with non-stick vegetable spray. Set mold on small cookie sheet. Fill mold with prepared green gelatin. Chill until set.
Using Pink icing color, tint remaining gelatin light coral. Spray oblong pan with non-stick spray. Pour coral gelatin into pan. Chill until set.