The Water Babies was written by Charles Kingsley in 1863. The first illustrator was Jessie Willcox Smith-bright oil painting colours but rather misty.
1912 Illustrated by Warwick Goble. Light pastel, not all that colourful as such.
1915 Illustrated by W Heath Robison. Mixture of dark colours and light colours, in a rather gothic style.
1916 Illustrated by Mabel Lucie Attwell. Chubby checked characters, rather pastelly.