How to style GWT CellList?

I have a CellList that I want to style. I want to change the cursor style, the ugly color of a selected cell . I checked several questions and discussions on stack overflow,but none of them worked. I checked these one:

CellList GWT CSS Style

How do I style a gwt 2.1 CellTables headers?

Her is my code:

public interface CellListResource extends CellList.Resources {


  public static CellListResource INSTANCE = GWT.create(CellListResource.class);

  interface CellListStyle extends CellList.Style {

  }

  @Source({CellList.Style.DEFAULT_CSS, "CellTableStyle.css"})
  CellListStyle style();
}

 public SearchViewImpl() {

    CompanyCell companyCell = new CompanyCell();
//it doesn't work :S 
    companiesList = new CellList<Company>(companyCell, CellListResource.INSTANCE);

    rootElement = ourUiBinder.createAndBindUi(this);

    loadingImage.setVisible(false);
  }

Am I missing something? I Cleared Browser cache, Restarted server, F5 F5 F5 .... F5 (pressed refresh again and again) and nothing ...! Thanks for help in advance.

Make sure you inject the css resource.

CellTableResources.INSTANCE.cellTableStyle().ensureInjected();
myCellTable = new CellTable<T>(Integer.MAX_VALUE,CellTableResources.INSTANCE);

You can follow the following link

How do you change the mouse over highlighting?