-- Redshift
rs = wibox.widget.imagebox(beautiful.widget_rs_on)
lain.widgets.contrib.redshift:attach(
    rs,
    function ()
        if lain.widgets.contrib.redshift:is_active() then
            rs:set_image(beautiful.widget_rs_on)
        else
            rs:set_image(beautiful.widget_rs_off)
        end
    end
)