Star Trek Johnny Lightning

[Wayne Foundation]

Hi guys. I picked up some ships from wave 4 and understand there are "White Lighning" variants of all ships.

Can anyone please tell me an easy way to spot them? I'm completely stumped. Thanks.

[McHaleyArt]

I think most of the White Lightening versions are a brighter white and/or have a some kind of symbol on the bottom of the ship that the others don't.