>>Is there a way to get editor object
Current active editor grid.editor
>>Set value of active editor
In most case it will be available as grid.editor.obj ( but not in all , this is not strict rule )
grid.edotor.obj.value=“new text”;
>>I want to set color of "someItemNumber"
You can access html node of cell as
grid.cells(i,j).cell
and do any direct manipulation with HTML
More complex approach - creating custom exCell, where you can define as item will look in normal and edit states as well as formatting|coloring rules or custom methods.