> Anyone notice if you copy a phone number from your contacts and paste in an email and both number and email background are the same color
Nope. Can't reproduce this. If I copy a phone number (or any details from Contacts) and paste into an email message, it appears as black text on a white background, as I'd expect.
That said, there may be something specific about your setup that differs from mine, so maybe more details would help. Either way...
> can somebody please fix this?
If it is a bug then a fix will have to come from Apple. No one here can 'fix' the app if it's broken.. at best all we can do is help identify the cause and offer a potential workaround.