How to add color to the workflow notification HTML message body

There can be scenario when customers want specific text in workflow messages to be color coded. Like there could be some warning message to users that they need to review before approving the workflow notification. Such kind of requirement can be achieved easily by using specific HTML tags in the workflow message HTML body:
eg:

br
span style='color:red'
TEXT INPUT
/span
br
I have removed < > "HTML braces" from the tags.

This would result in RED color text when the notification from workflow goes out to the users like below..

TEXT INPUT