stellaris - better imp hulls - adding colossi

#Colossus
utility_component_template = {
	key = "COLOSSUS_BRB_REACTOR_1"
	size = large
	icon = "GFX_ship_part_reactor_booster_1"
	icon_frame = 1
	power = @brb_power_1_colossus
	resources = {
		category = ship_components
		cost = {
			alloys = @brb_cost_1_colossus
		}
		upkeep = {
			energy = @brb_upkeep_1_colossus
		}
	}

	prerequisites = { "tech_reactor_boosters_1" }
	size_restriction = { colossus }
	component_set = "brb_reactor"
	custom_tooltip = "BRB_UPKEEP_1_COLOSSUS"
	upgrades_to = "COLOSSUS_BRB_REACTOR_2"
	ship_modifier = {
		ship_shield_regen_add_static = @brb_regen_1_colossus
	}

	ai_weight = {
		weight = 2
	}
}

utility_component_template = {
	key = "COLOSSUS_BRB_REACTOR_2"
	size = large
	icon = "GFX_ship_part_reactor_booster_2"
	icon_frame = 1
	power = @brb_power_2_colossus
	resources = {
		category = ship_components
		cost = {
			alloys = @brb_cost_2_colossus
		}
		upkeep = {
			energy = @brb_upkeep_2_colossus
		}
	}

	prerequisites = { "tech_reactor_boosters_2" }
	size_restriction = { colossus }
	component_set = "brb_reactor"
	custom_tooltip = "BRB_UPKEEP_2_COLOSSUS"
	upgrades_to = "COLOSSUS_BRB_REACTOR_3"
	ship_modifier = {
		ship_shield_reduction = -0.1
		ship_shield_regen_add_static = @brb_regen_2_colossus
	}

	ai_weight = {
		weight = 3
	}
}

utility_component_template = {
	key = "COLOSSUS_BRB_REACTOR_3"
	size = large
	icon = "GFX_ship_part_reactor_booster_3"
	icon_frame = 1
	power = @brb_power_3_colossus
	resources = {
		category = ship_components
		cost = {
			alloys = @brb_cost_3_colossus
		}
		upkeep = {
			energy = @brb_upkeep_3_colossus
		}
	}

	prerequisites = { "tech_reactor_boosters_3" }
	size_restriction = { colossus }
	component_set = "brb_reactor"
	custom_tooltip = "BRB_UPKEEP_3_COLOSSUS"
	upgrades_to = "COLOSSUS_BRB_REACTOR_4"
	ship_modifier = {
		ship_shield_hardening_add = 0.2
		ship_shield_reduction = -0.25
		ship_shield_regen_add_static = @brb_regen_3_colossus
	}

	ai_weight = {
		weight = 5
	}
}

utility_component_template = {
	key = "COLOSSUS_BRB_REACTOR_4"
	size = large
	icon = "GFX_ship_part_brb"
	icon_frame = 1
	power = @brb_power_4_colossus
	resources = {
		category = ship_components
		cost = {
			alloys = @brb_cost_4_colossus
			sr_dark_matter = @brb_dmcost_4_colossus
		}
		upkeep = {
			energy = @brb_upkeep_4_colossus
		}
	}

	prerequisites = { "tech_brb_dark_matter_reactor_boosters" }
	size_restriction = { colossus }
	component_set = "brb_reactor"
	custom_tooltip = "BRB_UPKEEP_4_COLOSSUS"
	ship_modifier = {
		ship_shield_hardening_add = 0.25
		ship_shield_reduction = -0.5
		ship_shield_regen_add_static = @brb_regen_4_colossus
	}

	ai_weight = {
		weight = 10
	}
}