本方法基于Mixin技术，建议先学习并掌握基本原理。

首先mixin焰魔套的材质渲染（注意焰魔套和焰魔鞘翅胸甲是分开注册的），然后修改渲染的逻辑：

package com.hanz0.stellarisdlc.mixins;

import L_Ender.cataclysm.items.Ignitium_Armor;
import com.hanz0.stellarisdlc.init.StellarisdlcModMobEffects;

import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.EquipmentSlot;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.ItemStack;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Overwrite;

@Mixin(value = Ignitium_Armor.class, remap = false)
public class Ignitium_ArmorMixin {
    /**
     * @author
     * @reason
     */
    @Overwrite
    public String getArmorTexture(ItemStack stack, Entity entity, EquipmentSlot slot, String type) {
        if (entity instanceof LivingEntity Liv) {
            if (Liv.hasEffect(StellarisdlcModMobEffects.IGNIS_SLASH.get())) {
                return "cataclysm:textures/armor/soul_ignitium_armor" + (slot == EquipmentSlot.LEGS ? "_legs_soul.png" : ".png");
            }
        }
        return "cataclysm:textures/armor/ignitium_armor" + (slot == EquipmentSlot.LEGS ? "_legs.png" : ".png");
    }
}

package com.hanz0.stellarisdlc.mixins;


import L_Ender.cataclysm.items.Ignitium_Elytra_ChestPlate;
import com.hanz0.stellarisdlc.init.StellarisdlcModMobEffects;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.EquipmentSlot;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.item.ItemStack;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Overwrite;

import javax.annotation.Nullable;

@Mixin(value = Ignitium_Elytra_ChestPlate.class, remap = false)
public class Ignitium_Elytra_ChestPlateMixin {

    /**
     * @author
     * @reason
     */
    @Nullable
    @Overwrite
    public String getArmorTexture(ItemStack stack, Entity entity, EquipmentSlot slot, String type) {

        if (entity instanceof LivingEntity Liv) {
            if (Liv.hasEffect(StellarisdlcModMobEffects.IGNIS_SLASH.get())) {
                return "cataclysm:textures/armor/soul_ignitium_elytra_chestplate.png";
            }
        }
        return "cataclysm:textures/armor/ignitium_elytra_chestplate.png";
    }

}

这里笔者以自己设计的buff为判断条件，而且要注意！焰魔套变色后的材质带有前后缀！读者可以自行修改测试。

然后新做一个材质包，路径与灾变的焰魔套材质保持一致，命名则以修改后的为准：

将模组导出并和材质包安放准确后，进游戏就实现效果了：