[yparitcher]

in /etc/xdg/awesome/lab126_ligl.lua the epdcMode lipc call is defined as:

    -- property to enable/disable colorInverse mode
    propertyColorInverseMode = registerLipcStringProp("epdcMode", "rw")
    propertyColorInverseMode.value =  execAndGrabResult("get-dynconf-value winmgr.colorinverse.pref")
    propertyColorInverseMode.listener = function (name, value)

        local ret = ligl.set_epdc_grayscale_mode(g_liglRef, tostring(value))
        if (ret == 1) then
            execAndGrabResult("set-dynconf-value winmgr.colorinverse.pref " .. tostring(value))
            execAndGrabResult("xrefresh -root")
            sendLipcEvent("nightModeStateChanged",{tostring(value)})
        else
            llog.error("WindowManager", "propertyColorInverseMode", "","Failed to set EPDC MODE to " .. tostring(value))
            propertyColorInverseMode.value =  execAndGrabResult("get-dynconf-value winmgr.colorinverse.pref")
        end
    end