Conditionally format individual words/characters, differently in visual text elements

It would be helpful if we could format individual text characters or specific words among a text element. Today it’s only possible to bulk-format full text elements.This would allow more nuanced formatting for i.e. titles like this example: Sales vs. Budget trend -- you then don't need a legend if you can format the title.

It would be helpful if you could pattern-match, using DAX to identify the words / characters (i.e. via search, text matching or regex) and fields to use for formatting of those characters.

I.e. Conditionally specifying if the characters = "X" then condition1, else if the characters = "Y" then condition2.