How To Auto Change Text Color

How can I change negative (-) amounts to a red color that’s based on a dynamic list? This list is a downloaded CSV file that is imported to a database. Some of the amounts have minuses (-) in front of the amount, i.e. -400.99, etc.

Screen Shot 2020-05-18 at 6.15.23 PM2226×128 22.3 KB

Since they are mixed in the output from the CSV, I would like the negative currency to be red.

Is something like this a correct usage:

dmx-style:text-danger.important=“amount.startsWith(”-")"