I created a Planet Trait that has a trigger to apply a bonus to each new colony founded. I had to use a trigger because adding a Scope entry(Global) too EffectModifier does not work neither does having Faction as a Target btw. So a Trigger it was:-
<PlanetTrait>
<InternalName>HomeWorld_FED</InternalName>
<DisplayName>ST_HomeWorld_Name</DisplayName>
<Description>ST_HomeWorld_Dec</Description>
<RelativeWeight>0</RelativeWeight>
<PlanetClassSelect>
<MinPlanetClass>16</MinPlanetClass>
<MaxPlanetClass>16</MaxPlanetClass>
<Weight>100</Weight>
</PlanetClassSelect>
<EffectModifier>
<EffectType>Growth</EffectType>
<Target>
<TargetType>Colony</TargetType>
</Target>
<BonusType>Multiplier</BonusType>
<Value>0.2</Value>
</EffectModifier>
<EffectModifier>
<EffectType>ProductionPoints</EffectType>
<Target>
<TargetType>Colony</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>4</Value>
</EffectModifier>
<EffectModifier>
<EffectType>InfluencePerTurn</EffectType>
<Target>
<TargetType>Colony</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>1.5</Value>
</EffectModifier>
<Triggers>
<OnEvent>OnColonizePlanet</OnEvent>
<Scope>Global</Scope>
<Target>
<TargetType>Colony</TargetType>
</Target>
<Lifetime>Target</Lifetime>
<Modifier>
<EffectType>InfluencePerTurn</EffectType>
<Target>
<TargetType>Colony</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>1</Value>
</Modifier>
</Triggers>
<ColonizationPrerequ>
<Techs>
<Option>TechTree</Option>
</Techs>
</ColonizationPrerequ>
</PlanetTrait>
It works, the +1 Influence is applied to a new colony, only it does not show where from in the tooltip instead it shows a "Missing Info" +1:-
