add palette to wood banister

homedecor/misc-nodes.lua

@@ -515,6 +515,7 @@ for _, side in ipairs({"diagonal_left", "diagonal_right", "horizontal"}) do
 		end
 
 		if name == "wood" then
+			def.palette = "unifieddyes_palette_greys.png"
 			def.airbrush_replacement_node = "homedecor:banister_wood_"..side.."_grey"
 			def.groups.ud_param2_colorable = 1
 			def.paramtype2 = "colorfacedir"