With the exception of Earth, many planets look different from the main map view (from space) than they do in the colony management screen.
The coloring is always correct (e.g. high quality planets appear purplish) from both space and on the colony management screen) but the terrains are often completely different. I've seen this widespread through every game I've played so far, so it shouldn't be difficult to reproduce. If it is, I can send any of my save games.
Here's the easiest way to spot the problem:
1. Search through planets on the main galaxy map and locate a planet with a moderate amount of ocean. (i.e. "Earthlike, 50-70% water, but not the low-class mostly-ocean planets).
2. Go to the colony management screen and compare the terrain/ocean features with what you saw from space.
This might be related to another persistent problem: terrain tiles appear to be labeled randomly. (e.g. I'll click on a tile that looks like mountains or prairie, and the game claims it's an "ocean" tile.) If the colony map doesn't sync up with the map of the planet from space....maybe the map on the colony screen is the wrong map and the one from space is correct?
Arg. Thanks for reading.