Arcade: How do I get part of a label to change color?

[GISAdmin7]

Is it possible to have the X in the label Display in red?

Example :

719: X

I've tried this:

'<CLR red = "255">(": X")</CLR>'

[Anonymous User]

is it possible to match the label colour to the colour of the features symbology?

[AmyHox]

I found this thread which I thought might have solved it but I still haven't gotten it to work

Solved: Re: Change text color based on value/label using A... - Esri Community