select different profile color customizations

[tomer-steinbach]

"profileSwitcher.storage": {
        "java": {
            "workbench.colorTheme": "Henna",
            "workbench.colorCustomizations": {
                "activityBar.background": "#111111"
            }
        },
        "ruby": {
            "workbench.colorTheme": "Henna",
            "workbench.colorCustomizations": {
                "activityBar.background": "#FF2A3B"
            }
        }
}

Is such functionality should be possible?
It looks like the switcher ignores the "workbench.colorCustomizations" directive