DataLudi Grid v.1 > Classes > OperateOptions
Column sorting handle renderer. 
The current sorting handle renderer embodied is only DefaultSortHandleRenderer.
Defaults to null.
    grid.setOperateOptions({
        sortHandleRenderer: {
            type: ""    // If not specified, DefaultSortHandleRenderer
            backgroundColor: "#ff0000",
            borderColor: "#880000"
        }
    });