Using pre-Wano visuals, when Oda didn't even know of AdvCoC, is basically useless.
If you want, I can even show pictures of Haki being totally invisible; that doesn't mean it is invisible now lol.
Visuals completely changed at the end of Wano. That's why, for example, I called Gaban's CoC literally the first time we saw it, while some people still tried to deny the obvious:
But I can show you even "invisible" AdvCoC Haki in recent panels too.
Using the brain is always the way to go.