The candles alone are... well, can be. It depends on the person you speak to. As for the relation to witches, they're just often depicted with pointed hats, more typically for children.

Still, all together - the display of a hat and the candles - those can lean towards more occult and witchcraft. Not that there's anything wrong with that, but for the days where the realms are said to cross, it would be time for those who participate in such practices to come forth.