Change color of ListView items

To change background color of ListView items, you need to write your own OnCustomDrawItem event handler.
The best result is when you set the ViewStyle to vsReport, but it’s completely functional even with vsList style. OnCustomDrawItem code is very simple:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ComCtrls;

type
  TForm1 = class(TForm)
    ListView1: TListView;
    procedure ListView1CustomDrawItem(Sender: TCustomListView; Item: TListItem; State: TCustomDrawState; var DefaultDraw: Boolean);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.ListView1CustomDrawItem(Sender: TCustomListView;  Item: TListItem; State: TCustomDrawState; var DefaultDraw: Boolean);
begin
  with ListView1.Canvas.Brush do
  begin
    case Item.Index of
        0: Color := clYellow;
        1: Color := clGreen;
        2: Color := clRed;
    end;
  end;
end;

end.