Hatch or groupfill in groupedbar stats plots

Hello:

Is there anyway to fill the bar in groupedbar (statsplots Julia) with something like hatch or groupfill?

That would be really useful for publications in black and white.

I tried the below without luck
Please help.

J, L = 8, 3 ;  beta0 = rand(L,J) ;
ctg = repeat(["C","I","M"], inner = J) ;
nam = repeat(string.(1:J), outer = L) ;
filx = repeat([:+,:/,:x], inner = J) ;
groupedbar(nam,beta0, group = ctg,
    xlabel = "O", ylabel = "S", legend = :topleft, fillstyle =filx,
    color = [:green :blue :red]) ;