Turns out that the answer can be found in data\Races.xml.
You can activate the more or less white Human flag and color by uncommenting line 8.
Code: Select all
<AlternateFlagFilenames>
<string>UserInterface/Flags/Human_2</string>
<string>UserInterface/Flags/Human_3</string>
</AlternateFlagFilenames>There are up to 7 races times 3 flags or 21 distinguishable empires possible at game start.
To make sure all empires in the game are distinguishable, no matter how many you choose, you have to switch off Auto-Generated Starting [other] Empires. Instead of letting the game make bad choices before you even can know, you have to Add New [other] Empire and choose no more than 3 of the same race, including your own Empire.
While there are only two sets of colors, MainColor and SecondaryColor, listed in data\Races.xml, the third one is based on both of them.
@ Elliot:
In order for Auto-Generated Starting [other] Empires to work properly, a cap on races needs to be added based on the available number of flags for each race, not to exceed 3, as there are currently only 3 possible colors per race.
Otherwise we'll end up with same flag/color Empire again and again and again, see links.