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procedure TMainform.SpeedButton1Click(Sender: TObject);
begin
  if SpeedButton1.Font.Color = clBlack then
    SpeedButton1.Font.Color := clRed
  else
    SpeedButton1.Font.Color := clBlack;
  ...  // weitere Aktionen
end;                    

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for i := ?? to ?? do
  begin
         s := TSpeedbutton(FindComponent('AktionsButton' + IntToStr(i)));
         if s <> Sender then Farbe zurücksetzen
        end;                    

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type
  TSpeedbutton=Class(Buttons.TSpeedbutton)
    public
    Procedure paint;override;
  End;
  TForm1 = class(TForm)
    Button1: TButton;
    SpeedButton1: TSpeedButton;
    procedure FormMouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure Button1Click(Sender: TObject);
    procedure SpeedButton1Click(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
procedure TSpeedbutton.paint;
var
  PaintRect:Trect;
  s : String;
begin
  if Tag=1 then
    begin
  PaintRect := Rect(0, 0, Width, Height);
  Canvas.Brush.Style := bsSolid;
  Canvas.Brush.Color := clLime;
  Canvas.FillRect(PaintRect);
  s := caption;
  Inflaterect(PaintRect,-10,-10);
  canvas.TextRect(PaintRect,s,[tfCenter,tfVerticalCenter]);
    end
 else
    begin
      inherited;
    end;
end;                    

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procedure TMainform.SpeedButton1Click(Sender: TObject);
begin
  if BildNr =  1 then
    begin
      SpeedButton1.Glyph.LoadFromResourceName(HInstance, 'BMP2');
      BildNr := 2;
    end
  else
    begin
      SpeedButton1.Glyph.LoadFromResourceName(HInstance, 'BMP1');
      BildNr := 1;
    end;
end;