This pack allows you to fully customize the block outline color in Minecraft, giving your game a personalized visual style.
By default, it comes with the color #ffcc0080 
Customize Outline
There are two ways to set your own outline color:
1. Manual Method:
Edit the rendertype_lines.vsh file directly at:assets/minecraft/shaders/core/rendertype_lines.vsh
Modify the line:temp = vec4(1.0, 0.8, 0.0, 0.5); // RGBA
Replace with your desired RGBA values.
2. Web Generator:
Use the custom generator to create a pack in your desired color. Choose from sliders, HEX input, presets, or save your own.
Open the Custom Outline Generator
⚠️ Compatibility
Not compatible with shaderpacks (e.g. Iris, Optifine) as they override core shaders.
If you would like to use shaders with a custom outline. You will need to use shaders that have their own custom outline option such as:
Complementary Reimagined
Complementary Unbound
or Photon Shader
Need help or have a suggestion?
Reach out on GitHub or join the Discord.
License
🎨 Custom Outline is © NotToBlame. You are permitted to:
- ✅ Use in modpacks if downloaded from official sources (Modrinth, CurseForge)
- ✅ Create and publish addon packs (as long as no original files are included)
- ✅ Make personal edits (not for redistribution)
You may not:
- ❌ Reupload or redistribute this pack or its assets
- ❌ Include original files in your own uploads or forks
- ❌ Use the pack commercially without explicit permission
