Grouped row background color

I need to change the background color of the grouped row when selecting a row inside that group.
How this can be done?

Also, I need to set a tooltip text to the grouped row when it is collapsed and another tooltip text when the grouped row is expanded

Unfortunately such features are not available.

In my case, I had to change dhtmlx.js file.

You can find

dhtmlXGridObject.prototype.groupBy=function(m,g) {

and you have to change

dhtmlXGridObject.prototype.groupBy=function(m,g,bg) {

and then down some line, You can find

this._gmask=document.createElement(“TR”);

You have to insert belong the code

if(bg!==undefined) this._gmask.style.background=bg;

Finally, You have to change your code to use groupBy function.
Add last argument, any color you like.
You already know, 1,2nd arguments are in my case.

mygrid.groupBy(3, [’’,’#title’,’#cspan’,’#cspan’,’#stat_total’,’’,’#cspan’], ‘gray’);