feat(sketchybar): opacity function with 0.0-1.0 input

dot_config/sketchybar/plugins/executable_colordummy.sh

@@ -130,10 +130,11 @@ else
 fi
 
 function color() {
-	alpha=${2:-255}
+  alpha=${2:-1}
   color="$1"
 
-	printf -v alpha "%02x" "$alpha"
+  printf -v parsed "%.0f" "$(bc -l <<< "255*${alpha}")"
+  printf -v alpha "%02x" "$parsed"
   selected_color="${theme}_${color}"
   echo "0x${alpha}${!selected_color}"
 }
@@ -145,7 +146,7 @@ sketchybar \
   icon.color="$(color pink)" \
   label.color="$(color pink)" \
   --set /space/ \
-	icon.color="$(color mauve 128)" \
+  icon.color="$(color mauve 0.5)" \
   icon.highlight_color="$(color pink)" \
   --set clock \
   icon.color="$(color pink)" \