Reply To: Search Text, Replace With Charactor Style

In the pop-up window you enter your character style. Or actually choose it from the pop-up that comes up directly in that window (e.g. characterstyle) if you made a characrter style in the first place.

In the Find panel you enter, in the fields above, the correct GREP. (in the GREP tab)
Like so \[\d+\:\d+\]

good luck, if there’s a komma (,) or some other punctiuation between those numbers let us know, than we’ll alter the grep code