Hide/show Blizzard's cooldown background/spiral on bars

[ramzax]

I use this macro to show/hide toolbars as I need them, but the macro doesn't hide blizzard's black cooldown background.

/run f={MultiBarLeft,MultiBarRight,MultiBarBottomRight,PetActionBarFrame}for i=1,4 do if f[i]:GetAlpha()<0.9 then f[i]:SetAlpha(1)else f[i]:SetAlpha(0) end end

I was hoping to get any help so that the macro hides/shows the background too depending on the state of alpha of the bars (hide background when buttons alpha is 0, show otherwise).

Any help is appreciated