RGB Outline Selection

by ZeeGood · on Modrinth

Animated RGB Block Outline: Smooth rainbow selection highlights built with zero code bloat for maximum performance!

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game. This mod is built for Fabric only.

Minecraft 1.21.8–1.21.11Newest
Minecraft 1.21–1.21.7
Minecraft 1.20.5–1.20.6
Minecraft 1.20.2–1.20.4
Minecraft 1.20.1

⬇ Download for 1.21.8–1.21.11 ⬇ Download for 1.21–1.21.7 ⬇ Download for 1.20.5–1.20.6 ⬇ Download for 1.20.2–1.20.4 ⬇ Download for 1.20.1

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

🌈 Animated RGB Block Outline

Tired of the default black selection box around blocks? [RGB Outline Selection] replaces the classic black outline with a smooth, fully animated RGB rainbow highlight!

⚡ Standalone & Ultra-Optimized

Built specifically for the Fabric Loader with performance and simplicity in mind:

🔌 100% Standalone: No Fabric API or extra dependencies required! Just drop the mod in and you're good to go.
🧹 Zero Bloatware: Clean codebase with no unused code, no commented clutter, and no background lag.
🚀 Pure Efficiency: Written purely for functionality to guarantee zero FPS drops or CPU spikes.

✨ Features:

🌈 Animated RGB Highlights: Smooth rainbow animation replacing the black block outline.
📦 Zero Dependencies: Runs completely out of the box on Fabric.
💻 Client-Side Only: Safe to use on any multiplayer server!

❓ FAQ

Q: Do I need Fabric API or any other mod?

No! This mod is completely standalone. All you need is the Fabric Loader itself.

Q: Will this cause lag or FPS drops?

Not at all. The code is fully optimized and stripped of all non-essential elements for maximum performance.

Q: Is this allowed on servers?

Yes. It is a purely aesthetic client-side mod that doesn't grant any unfair advantage.

💡 How to Install:

Make sure you have Fabric Loader installed.
Download the .jar file for your Minecraft version.
Place it inside your .minecraft/mods folder.
Launch the game and enjoy!

Verified by MCModsHub

Ships as rgboutline-1.0.0-mc1.21.8-1.21.11-fabric.jar — drop this file into the mods folder
Download size: 15 KB
Download link checked 29 Aug 2026 — working

These come from our own check of the pack file, not from the source page.

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