I recently created a mod to diversify Terrain Types suited to the different factions and tweak colors to match faction icons a bit more. I'll supply the direct code insert in the post below. Mod code originally found in Stardock Games\Elemental\data\English\CoreRaceConfigs.xml
You can get the mod Here, just unzip it into your \My Documents\My Games\Elemental\ folder, if you want just the code it's in the post below.
PS: Sorry I have to use Mediafire, but Stardock Forums doesn't provide an "Attach File" option like many other mod forums.
This mod is fully compatible will not effect anything but the colors and terrains of factions, so it's perfectly safe with patches.
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** Plans **
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Things I plan to do as I figure out how.
Mod Tarth to have Grassy Swamp Land as their default terrain
Mod Yithril to have dead/barren swamp land as their default terrain (if I can)
Mod Yithril's Color to be darker (I want to get a fitting custom icon for it first)
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********** List of Changes **********
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** Kingdom of Capitar **
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Changes
Colors now match Logo
Terrain set to Winter
Reasons
Arbitrary but fits the logo
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** Kingdom of Gilden **
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Changes
Terrain set to Desert
Reasons
Gilden borders the desert, matches color scheme, fits Kingdom Profile.
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** Kingdom of Pariden **
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Changes
Terrain set to Winter
Reasons
Pariden is in the North and it fits the color scheme and general theme of the Kingdom
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** Empire of Kraxis **
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Changes
Terrain set to Desert
Reasons
Kraxis is a barren land that borders the desert, it fits the color scheme and general theme
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** Empire of Magnar **
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Changes
Color Scheme changed, now dark red, dried blood color
Reasons
It's fitting, it matches the dragon, matches the race better, shows up better, and is fitting for an adversary of Altar
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** Empire of Resoln **
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Changes
Terrain changed to Winter
Reasons
They live in the North in a harsh land where only the fittest survive, it suits their color, logo, and general theme.
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** Empire of Umber **
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Changes
Color changed to brown (mostly, Faction Color was being difficult), Terrain changed to Desert
Reasons
Desert as a place holder until I figure out the modifier for barren (not dead). Death Terrain was simply unfitting for the race. Color because it fits the race better than orange, but the faction color is being difficult and doesn't want to change.