Change form background color in dynamics Ax

How to change form background color overall in AX

Problem : I was assigned by a task to change the background color of a form by company 
               so user can differentiate between companies.

Solution : 
               

                 Class Name : SysSetupFormRun

              Overrides the run method with following code

              public void run()

              {

                            ;

                            super();

                            switch(curext)

                            {

                                    case "AYN":

                                                       this.design().colorScheme(FormColorScheme::RGB);

                                                       this.design().backgroundColor(WinAPI::RGB2int( 204,255,0));  

                                                       break;

                                   case "CAT":

                                                       this.design().colorScheme(FormColorScheme::RGB);

                                                       this.design().backgroundColor(WinAPI::RGB2int (155,255,0));

                                                       break;

                             }

                 }

                 it solved my problem