Removing all hats and clothes from a player before adding custom body colours. It removes hats and clothes but fails to add body colours. I may be going about this the wrong way but this is the simplest I can see.
game.Players.PlayerAdded:connect(function(plr)
plr.CanLoadCharacterAppearance = false
lbbc = game.Lighting["Body Colors"]
local bbc = lbbc:clone()
bbc.parent = game.Workspace.plr
end)

3 comments
CanLoadCharacterAppereance prevents the body colors from loading in and thus the player does not have body colors to change
Oh, my bad. Just go with the first things I said then.
I also just thought of something that would be a better way to do it... Read it again.