Palette Swap for MineColonies

Tired of every MineColonies village being built from the same vanilla blocks? Palette Swap lets you re-skin the block palette of any MineColonies, SlimColonies or Structurize blueprint — change materials block-by-block with an in-game picker, or define automatic rules in a datapack. It's non-destructive and applied at placement, so your original schematics and packs are never modified.

Features

• 🎨 In-game palette editor. A Replace button on the Structurize build wand and on MineColonies' Build Options window opens the Edit Block Palette picker — one row per material in the build. Pick a replacement from a candidate pool and the holographic preview updates instantly. A Reset button puts everything back to default.
• 🏘️ Per-building palettes (MineColonies & SlimColonies). Set a building's palette once: your picks are saved to the colony, synced to everyone, and re-applied every time the builder builds or upgrades it. A Current / Upgrade toggle lets you edit the tier you already have or the tier you're about to build.
• 📜 Datapack rules. Define automatic substitutions in JSON — fixed swaps or interactive "pick from a pool" rules, matched by block or block tag, with blockstate property carry-over and priorities. Perfect for modpacks that want builds to use their own materials.
• 👷 Full builder support. The colony's builder, miner and quarrier all place through Structurize, so substitutions apply to everything they build — material requests, placement, and build-progress tracking all stay in sync.
• 🧱 Domum Ornamentum aware. DO "materialized" blocks (panels, bricks, framed blocks, …) have their stored materials swapped too, not just plain blocks.
• 🔄 Non-destructive. Blueprints are never altered on disk; substitution happens only as blocks are placed.

Optional: ready-made palettes

The mod ships an opt-in default datapack — off by default (enable it from the world's Data Packs screen, or use /datapack enable structurizereplacements_defaults command to enable while already in world) — that adds interactive pick pools for common vanilla families:

wood (planks, logs, stairs, slabs, fences, gates, doors, trapdoors, buttons, plates, signs) · wool · terracotta · glazed terracotta · stained glass · concrete & concrete powder · beds · flowers (small & tall) · leaves · saplings · mushrooms · potted plants · sand & sandstone

Turn it on for an instant working picker, or leave it off and ship your own rules.

For modpack & datapack authors

Drop rules in data/<namespace>/block_substitutions/<name>.json:

{
  "replacements": [
    { "from": "minecraft:cobblestone", "to": "minecraft:mossy_cobblestone" },
    { "from_tag": "minecraft:planks", "to_tag": "minecraft:planks" }
  ]
}

"to" is an automatic swap; "to_tag" is an interactive pool the player chooses from in the Replace GUI. Optional apply_properties / copy_properties carry blockstate values across, and priority lets one pack override another. Everything is /reload-able.

Compatibility

• Minecraft 1.20.1 · Forge (NeoForge 1.21.1 WIP)
• Requires: Structurize (plus BlockUI and Domum Ornamentum — Structurize's own dependencies)
• Optional: MineColonies or SlimColonies (1.20.1-17.4+) — when either is present, the per-building Build Options editor and the builder integration activate. Without a colony mod, you still get the full Structurize build-wand experience.

Links

• 📦 MineColonies
• 🏙️ SlimColonies
• 🏗️ Structurize

Palette Swap for MineColonies is an independent addon and is not affiliated with the MineColonies or SlimColonies teams.