Power BI : Dynamic Colors for TopN values on Clutered Column Chart

shout-out to Amira Bedhiafi for providing the solution on stackoverflow 
Below is the DAX solution to the problem in the [SelectedSubcategoryColor] measure

SelectedSubcategoryColor =
VAR _CurrentSubcategory = SELECTEDVALUE ( Subcategory[SubcategoryName] )
VAR _AllSubcategories = ALLSELECTED( Subcategory )
VAR _CurrentRank = RANKX( _AllSubcategories, [Sales], , DESC )
RETURN
    SWITCH(
        TRUE(),
        _CurrentRank = 1, "Red",
        _CurrentRank = 2, "Green",
        _CurrentRank = 3, "Blue",
        _CurrentRank = 4, "Orange",
        _CurrentRank = 5, "Purple",
        _CurrentRank = 6, "Yellow",
        _CurrentSubcategory = "Others", "Grey",
        "Black"
    )