Yes, but i just wanted to show the effect.
If you can't disable the P, try 'spawning in' salt, and mixing it with water. You'll get the same as if you had 'spawned in' SLTW. It's just the deco layer.
It isn't actually different from spawned salt - you just have Powder effect (The P on the top right) enabled, which paints it a deco color when you throw the salt in.