Stuf + Threat

[Nibelheim]

Or for threat colored text.

function(unit)
    local _, _, threatpct, _, threatvalue = UnitDetailedThreatSituation(unit, "target")
    local color = status and {GetThreatStatusColor(status)} or {GetThreatStatusColor(0)}
    if threatvalue then
        return "|cff%02x%02x%02x%d|r", color[1], color[2], color[3], floor(threatpct)
    else
        return ""
    end
end