Hide Worksheets Based On Tab Color

Found a closed post on a solution that is almost what I am looking for, described by the following tab layout...

All tabs in worksheet: Master1, Tab1, Tab2, Master2, Tab3, Tab4, Master3, Tab5, Tab6

Click Master1: Visible - Master1, Tab1, Tab2, Master2, Master3
Click Master2: Visible - Master1, Master2, Tab3, Tab4, Master3
Click Master3: Visible - Master1, Master2, Master3, Tab5, Tab6

When you click a master tab, all tabs that are NOT the same color as that Master are hidden (except other masters)

This bit of VBA does the trick however I would like it to be color based. In this model below, you have to manually add the worksheets that belong to a particular master.

The behavior I seek is to associate a worksheet with a master by changing its tab color, and not having to do it in the code. I think it could be accomplished by cycling through the workbook and creating an array of tabs based on tab color.

'=============>>
Private Sub Worksheet_Activate()
Dim sh As Worksheet 'Object
Dim arr As Variant

arr = Array("Sheet1", "Sheet2", "Sheet3") ' <<=== CHANGE

[Code] .....