more variant software selection needles for BGO #771127
    
    so what seems to be going on on the software selection screen
    is some kind of GTK+ bug:
    
    https://bugzilla.gnome.org/show_bug.cgi?id=771127
    
    the radio button bullets don't always render correctly - I think
    they're not always completing a transition they go through on
    selection. I think they can get stuck in any state between 'grey
    and small' and 'black and big', but for now these are the needles
    I've managed to create from failures; we're missing a 'greyer
    KDE' variant, but if that happens, we can add it. If the bug
    gets fixed we should be able to drop all these.