List faces using
‘M-x list-faces-display’ and customize them by hitting enter. This is a standard Emacs command.
‘M-x anything-colors’, narrow the face list by typing some patterns(multiple patterns are space-delimited string), select with up/down/pgup/pgdown/C-p/C-n/C-v/M-v, choose with enter to customize selected face.
‘describe-face’etc.), you can complete against the name or its RGB values, or both. Match using multiple patterns, substrings, regexps, etc.)