I know this is kinda silly but does anyone know of a list of the on-character color appearance of unique weapons and armors?

Some of them are obvious, but, for example, you wouldn’t know Bloodletter Gladius is bright red just from the picture.

I’d specifically like to know about black and red items but any help would be appreciated. Thanks!

Amazon basin used to have a spreadsheet for item color

Can’t seem to find it, but thanks anyways!