With planets now having up to 19 tiles for building placement... the colony graphics have now been updated so you can see straight away how many each planet has and what is built there (without going into the more detailed colony interface screen)
Each planet size (Tiny, Small, Medium, Large and Huge) has corresponding population graphics and hexagon tile sizes.
Various buildings at the colony such as Shipyards, Farming, Refineries, Research Labs etc. are placed within the center circle of the tile. Colony population graphics surround them, which is visible for each tile depending on the current population of the planet.
Uncolonized planets display their tile layout once they've been explored.
Many buildings provide bonuses to neighboring tiles. For example a Assembly Array building boosts the output of Shipyards adjacent to it.
Colony buildings have panels which display the colors of the faction, as well as relation identification lights when you zoom out.
Bonus ship screenshots
All those look really great! 
