Make the rainbow block texture non-animated

i've tried to make an settings option for it, but it doesn't work. anyway, animated texture for it worked weird (animation non-syncing near to chunk borders) and can be laggy

mod.conf

@@ -1,4 +1,4 @@
 name = mcl_decor
 title = MineClone2 Furniture and decorations
 description = Adds more decoration and furniture blocks to MineClone 2 (5)
-depends = mcl_core, mcl_sounds, mcl_dye, mcl_nether
+depends = mcl_core, mcl_player, mcl_sounds, mcl_dye, mcl_nether

register.lua

@@ -66,10 +66,7 @@ minetest.register_craft({
 --- Rainbow Block ---
 minetest.register_node("mcl_decor:rainbow_block", {
 	description = S("Rainbow Block"),
-	tiles = {{
-		name = "mcl_decor_rainbow_block.png",
-		animation = {type = "vertical_frames", aspect_w = 1, aspect_h = 1, length = 16}
-	}},
+	tiles = {"mcl_decor_rainbow_block.png"},
 	is_ground_content = false,
 	light_source = minetest.LIGHT_MAX,
 	groups = {handy=1, building_block=1, material_glass=1},