Total commander regex colorize

Task: Display files ending with mxf or wav and are not older than an hour with different color.
Solution: configuration/options/Color/Define colors by file type/Add/Define selection
In ‘General’ tab, this regex:

(?i)(?:mxf|wav)$

In ‘Advanced’ tab:

Enable 'Not older than:' 1 hour(s)

Select color, done.