How change color of row at Inbox?

We want to change color (text or background) of the selected row in Lotus Notes 9.0.1 (e-Mail) by Agent witch will be in Action Menu (it does not matter whether it will be implemented in Lotus Script or with simple action).
In the Action menu shall be a selection of different colors (red, blue, green) where the user can choose.
The modified color attribute should be added to the e-mail, to allow all users with access to the common mailbox to see the same text- or background color.
This mailbox is only over the Notes Client available. No iNotes or cellphone. The department which take care of that mailbox are 10 people who are tech-savvy.
Its like the feature “sender colors” (https://www-10.lotus.com/ldd/notestipsblog.nsf/dx/using-sender-colors-to-manage-your-email) but not by sender, but rather only at the selected row.
All advisor of one joint departmental mailbox should categorize the incoming e-mails for theirs assignment.
It could look like that: https://abload.de/img/76edd016-75b4-4cfe-ab04qma.gif https://abload.de/img/76edd016-75b4-4cfe-ab04qma.gif

We need an example of Lotus Script because be do not know how to arrange it.

Subject: Oh good, I was hoping someone would ask …!

We discussed it here, and while I can’t commit to supporting this rather short snippet, I’ve used it to good effect.

Keep in mind it’s a little artificial whenever you enable it or overwrite it; manually exit & reenter your mailbox.

Prior thread on color rows http://www-10.lotus.com/ldd/ndseforum.nsf/xpTopicThread.xsp?documentId=431636F9CA9001A985257FE1003E2FD5