Colored Messages not working in recent test builds

It appears this ticket can now be closed per the following recent discussion in the MailMate Users mailing list:

On 8 Nov 2023 1:02 PM, Pierre Igot wrote:
Re: [MlMt] How to reliably move incoming messages to separate mailboxes?

With the elimination in recent versions of MailMate of support for the “hidden” feature for colouring messages in the inbox message list using a file called Styles.plist, I have been told by Benny that I need to use smart mailboxes to apply colours to messages in a combined message list.

On 8 Nov 2023 1:19 PM, Rob Russell wrote:

That's potentially disappointing. Do the recent versions have a direct version of colouring?

On 8 Nov 2023 3:47 PM, Eric Sharakan wrote:

Yes, see Benny's note (with the prefix "Update (Nov, 2022):") here: (Ticket #204 Feature reqest: Coloring in the message list)

https://freron.lighthouseapp.com/projects/58672-mailmate/tickets/20...

Update (Nov, 2022): Most users will no longer need this low level feature. Recent test releases allow both changing color and the mailbox icon (see the Mailbox menu). A separate menu option then allows this color to be used in the message list (“Use Color in Message List”). Priority is given to the top-most mailbox using this setting.

On 8 Nov 2023 4:01 PM, Eric Sharakan wrote:

There's no need to move messages for this coloring feature to work. IIRC, all you need to do is create smart mailboxes containing the conditions you want for coloring the messages. Then, use the Mailbox->Color submenu to choose a color for that mailbox, and also select "Use Color in Message List". Your chosen color will be applied not only to the messages in your smart mailbox, but also to the original messages, wherever they reside.

@Seamus: In the next update (r6060), it should be possible to edit the Mailboxes.plist file when MailMate is NOT running, and then styling can be added to any mailbox like this:

fontStyle = "bold";

Available variants are like before: bold, italic and boldAndItalic.