Colonizing-Climate zones need to be made more clear

[bjg]

I was asking for a planning tool, to add 1-2 population (not .4).

There's an old thread related to this topic where I floated the idea of adding a green glow around any planets in the planetary report that would get a slot increase from moving the currently selected colonist type to that world. I still think something along these lines would probably be a good thing to add. Even with additional UI hints, it would still require a bit of experimentation to see what races could help on what planets, but it would be much quicker and simpler process than the current method of needing to actually select a colonist for transport, then hover over each possible destination planet in turn.

If the "green glow" is easier to implement I'd prefer the reverse mechanism - I select a planet, and all planets having more than two "units" of the race that can improve the current one start glowing in the planetary report.