From this feedback: https://www.mediawiki.org/wiki/Topic:Uubfxlarz7sdc3bz
The editor would like ''' and '' to use different colors.
@Whatamidoing-WMF The user can customize their colors using CSS.
Thank you. I've provided the link. I'm going to close this; if the user thinks that this ought to be done generally/for everyone by default, then someone can re-open it.
As no code was changed and as the same color is still used to highlight bold and italics this is not 'resolved'. :)