Customizable Blockoutlines

This adds an option to customize your block outlines in-game using a config.

215 Downloads

neoforgeutility

Rent Server with this Mod

About this Mod

Dependencies

Fzzy Config

Sub dependency the mod requires KotlinForForge

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Content

This mod does one simple thing and one simple thing only, it adds a way for the player to customize their block outline using the in-game config.

Here is a photo of the config menu where you can change the color via a colorwheel and the width of the block outlines. Also if you are really feeling up to it you can make the outline rainbow and change the speed (honestly wouldn't go above 2 as it get really fast)

visual representation of the config

Available Versions

Customizable Blockoutlines 1.0.0release

MC 1.21.1neoforge

March 30, 2026

How to Install Customizable Blockoutlines on Your Server

Order Server

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

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).

Install Mod

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

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Customizable Blockoutlines server crashes on startup – what to do?

Most common cause: wrong neoforge 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 (1.21.1). You can switch loaders with one click in the panel.

Is Customizable Blockoutlines compatible with neoforge?

Customizable Blockoutlines officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Customizable Blockoutlines – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Customizable Blockoutlines 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.