Custom Item Highlighter

1.2.0

Added

• Multi-MC-version support. Separate jars now built for Minecraft 1.21.11 (Yarn), 26.1, 26.1.1, and 26.1.2.
• HUD overlay compatibility. The highlight now appears wherever an item is rendered — vanilla container slots, the hotbar, MiniHUD / Tweakeroo's inventory preview, and Inventory HUD+'s armor / hotbar / inventory overlays. Previously only items rendered through the public 3-arg item() path (essentially just picked-up cursor items) were caught.

Fixed

• Highlight no longer shows as a solid box on items with transparent pixels. The 4-thin-rectangle border is drawn at the slot edges only; the item area in the middle is left untouched.
• Highlight renders under the item sprite and the count number / damage bar / cooldown overlay. Switched the inject point from RETURN to HEAD so the item and its decorations always draw on top of the border.
• pack.mcmeta accepted by MC 26.1.x. Datapacks use the min_format / max_format array form required for pack_format > 81.

Changed

• Lore-color highlight is on by default. Items with a "Tier" line in their lore that contains multiple colored characters cycle through those colors automatically. Toggle off in the config if you preferred the static color.
• Custom items in the vanilla hotbar are now highlighted on the HUD. Lower the alpha or open an issue if you want a config toggle to suppress this.

Implementation note

• Switched from a HandledScreen / AbstractContainerScreen slot mixin to a universal mixin on the private 6-arg item(LivingEntity, Level, ItemStack, int, int, int) (or the Yarn drawItem equivalent on 1.21.11). All public item() overloads delegate to this method, so the highlight fires once for every rendered item regardless of which entry point the caller used.