Slot Colorizer

A utility mod that customizes the item slot fill color based on the item you’re holding.

170 Downloads

fabricequipmentgame-mechanicsutility

Rent Server with this Mod

Screenshots

About this Mod

🌈 Slot Colorizer

Item Slot Colorizer that depends on your items!

Introduction

Ever wanted your item slots to change color depending on your items?
Then this mod is perfect for you!

Features

Custom config menu
Add/Remove blocks/items via config
Colorize item slot's fill color by selecting colors!
Custom color picker UI supported!

Dependencies

Fabric API
Mod Menu (Optional)

Environments

Platform	Supported?
Fabric	✅
Forge	❌
Quilt	❌
NeoForge	❌

Available Versions

Slot Colorizer 1.0release

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4fabric

October 29, 2025

How to Install Slot Colorizer on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.4).

Install Mod

Open the mod browser in the dashboard and search for "Slot Colorizer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.4, 1.21.3, 1.21.2 (+2 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Slot Colorizer server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.4). You can switch loaders with one click in the panel.

Is Slot Colorizer compatible with fabric?

Slot Colorizer officially supports fabric for Minecraft 1.21.4, 1.21.3, 1.21.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Slot Colorizer – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Slot Colorizer consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.