Krypton, labelled. Just as with Mongo, applying the labels was a huge pain in the rear end. At least I learned my lesson about using dark pigments.
The Dandahu Ocean was crossed by Superman's long-lost ancestor Val-El who voyaged from the ancient city of Erkol to discover the new world continent of Lurvan via the Red Ocean. Along the way, Val-El encountered Vathlo, the island of highly-advanced black citizens of Krypton.
The final step is to varnish the globe, which will make the whole world glossy and vivid, and also balance out the not-so-shiny areas.