DEMO MOD COMMIT

init.lua

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+-- This uses a trick: you can first define the recipes using all of the base
+-- colors, and then some recipes using more specific colors for a few non-base
+-- colors available. When crafting, the last recipes will be checked first.
+
+local dyes = {
+	{"white",      "White",      "basecolor_white"},
+	{"grey",       "Grey",       "basecolor_grey"},
+	{"black",      "Black",      "basecolor_black"},
+	{"red",        "Red",        "basecolor_red"},
+	{"yellow",     "Yellow",     "basecolor_yellow"},
+	{"green",      "Green",      "basecolor_green"},
+	{"cyan",       "Cyan",       "basecolor_cyan"},
+	{"blue",       "Blue",       "basecolor_blue"},
+	{"magenta",    "Magenta",    "basecolor_magenta"},
+	{"orange",     "Orange",     "excolor_orange"},
+	{"violet",     "Violet",     "excolor_violet"},
+	{"brown",      "Brown",      "unicolor_dark_orange"},
+	{"pink",       "Pink",       "unicolor_light_red"},
+	{"dark_grey",  "Dark Grey",  "unicolor_darkgrey"},
+	{"dark_green", "Dark Green", "unicolor_dark_green"},
+}
+
+minetest.register_node("i3_color_demo:wool", {
+	description = "Wool",
+	tiles = {"wool_block.png"},
+	paramtype2 = "color",
+	palette = "wool_palette.png",
+	is_ground_content = false,
+	groups = {oddly_breakable_by_hand = 3,},
+	sounds = default.node_sound_defaults(),
+})
+
+for counter, dye in pairs(dyes) do
+    minetest.register_craft({
+        output = minetest.itemstring_with_palette("i3_color_demo:wool", counter - 1),
+        type = "shapeless",
+        recipe = {
+            "i3_color_demo:wool",
+            "dye:" .. dye[1]
+        },
+    })
+end
+
+-- modified https://gist.github.com/juhdanad/433a0aa7094ae0dceaf00924d6fd1e3b and
+-- https://github.com/minetest/minetest/pull/5640#issuecomment-302868234
+-- demo for https://github.com/minetest-mods/i3/issues/18

mod.conf

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+depends = default, dye