[Sylen]

Did you make progress on this topic? For the glow effect people usually use this code:

--Highlight Purgable Buffs on Target and Focus 
hooksecurefunc("TargetFrame_UpdateAuras", function(s)
    for i = 1, MAX_TARGET_BUFFS do
        _, _, ic, _, dT = UnitBuff(s.unit, i)
        if(ic and (not s.maxBuffs or i<=s.maxBuffs)) then
            fS=_G[s:GetName()..'Buff'..i..'Stealable']
            if(UnitIsEnemy(PlayerFrame.unit, s.unit) and dT=='Magic') then
                fS:Show()
            else
                fS:Hide()
            end
        end
    end
end)