colorizing the index based on the alias file

[Pete Kelly <pkelly@xxxxxxxxxxxxxxxxx>]

Greetings:

I'm looking for a trick to highlight (change the color) of a message
based on the sender appearing in my alias file.

I've managed to make colors work at the index level but only by
creating an regex looking for specific senders. I'm looking to expand
that to any address that appears in any of my alias files.

Thanks,
Pete
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