diff --git a/scripts/average.sh b/scripts/average.sh
index 5c0ef89..e692b38 100755
--- a/scripts/average.sh
+++ b/scripts/average.sh
@@ -5,6 +5,72 @@
 
 set -eo pipefail
 
-printf '%s\t%s\n' \
-  "$(basename "${1}")" \
-  "$(convert "${1}" -resize 1x1 txt:- | grep -Po "#[[:xdigit:]]{6}" | tr A-F a-f)"
+SYSTEM="$(uname)"
+EXTRACTDIR=/tmp/extracted_blocks
+
+macos::install_deps() {
+  # Script requires imagemagick
+  if ! command -v convert &>/dev/null; then
+    if [[ "$SYSTEM" == "Darwin" ]] && command -v brew &>/dev/null; then
+      brew install imagemagick
+    fi
+  fi
+}
+
+macos::mc_home() {
+  echo $HOME/Library/Application Support/minecraft/versions
+}
+
+linux::mc_home() {
+  echo $HOME/.minecraft/versions
+}
+
+unpack_assets() {
+  case "$SYSTEM" in
+      Darwin)
+          MC_HOME="$(macos::mc_home)"
+          ;;
+      Linux)
+          MC_HOME="$(linux::mc_home)"
+          ;;
+  esac
+
+  if [[ -z "$MINECRAFT_VER" ]]; then
+    return
+  fi
+
+  JAR="$MC_HOME/$MINECRAFT_VER/$MINECRAFT_VER.jar"
+
+  if [[ -n "$JAR" ]]; then
+    mkdir -p "$EXTRACTDIR/$MINECRAFT_VER"
+    pushd "$EXTRACTDIR/$MINECRAFT_VER"
+    jar xf "$JAR" assets/minecraft/textures/block
+    popd
+  fi
+}
+
+average() {
+  FILE="$1"
+  EXTRACTED="$EXTRACTDIR/$MINECRAFT_VER/assets/minecraft/textures/block/$1.png"
+  if [[ -f "$EXTRACTED" ]] ; then
+      FILE="$EXTRACTED"
+  fi
+
+  COLOR="$(convert "$FILE" -resize 1x1 txt:-     \
+      | grep -o "#[[:xdigit:]]\{6\}"            \
+      | tr A-F a-f)"
+
+  printf '%s\t%s\n' \
+    "$(basename "$FILE")" \
+    "$COLOR"
+}
+
+if [[ "$SYSTEM" == Darwin ]] ; then
+  macos::install_deps
+
+  if [[ ! -d "$EXTRACTDIR/assets/minecraft/textures/" ]] ; then
+    unpack_assets
+  fi
+fi
+
+average "$1"
diff --git a/src/colors.json b/src/colors.json
index ca26e25..56a90d5 100644
--- a/src/colors.json
+++ b/src/colors.json
@@ -812,6 +812,7 @@
   "minecraft:sea_lantern": "#90b8ad",
   "minecraft:sea_pickle": { "color": "#4e531dfe", "type": "Head" },
   "minecraft:seagrass": { "color": "#389306fe", "type": "UnderwaterPlant" },
+  "minecraft:short_grass": { "color": "#426539fe", "type": "Plant" },
   "minecraft:shroomlight": "#f2974c",
   "minecraft:shulker_box": "#8535c3",
   "minecraft:skeleton_skull": { "color": "#969696fe", "type": "Head" },