Thank you for contacting Syncfusion support.
We have prepared the sample to remove the resource group row color when it is open which can be viewed from the below link.
Kindly refer the below code example used in the sample.
<Code>
function onCreate() { // this function will be called during the initial load
this._on(this.element, "click", ".e-parentnodecategory", hide);
hide();
}
function hide() { // this function will be called when the group is clicked
for (var i = 0; i < $(".e-parentnodecategory").length; i++) {
index = $($(".e-parentnodecategory")[i]).closest("tr").index();
if ($($(".e-parentnodecategory")[i]).hasClass('e-resourcecollapse'))
$($(".e-workcellstab tr")[index]).find(".e-categorybar").css("visibility", "hidden")
else
$($(".e-workcellstab tr")[index]).find(".e-categorybar").css("visibility", "")
}
}
</Code>
Regards,
Karthigeyan