InnoSetup, How to change the color of RichEditorViewer

I need to change the font color property of the RichEditorViewer of the default pages, but I can't find the control names or property name, I need help with this...

The RichEditorViewer of the InfoBeforePage (I need to change the font color):

Setup screenshot

This is the code I'm using:

const
  Custom_Height = 570;
  Custom_ProgressBar_Height = 30;
  Page_Color = $7b2b68;
  Page_Color_Alternative1 = clblack;
  Page_Color_Alternative2 = clwhite;
  Font_Color = $fffbff;

var
  DefaultTop,
  DefaultLeft,
  DefaultHeight,
  DefaultBackTop,
  DefaultNextTop,
  DefaultCancelTop,
  DefaultBevelTop,
  DefaultOuterHeight: Integer;

procedure InitializeWizard();
begin

  DefaultTop := WizardForm.Top;
  DefaultLeft := WizardForm.Left;
  DefaultHeight := WizardForm.Height;
  DefaultBackTop := WizardForm.BackButton.Top;
  DefaultNextTop := WizardForm.NextButton.Top;
  DefaultCancelTop := WizardForm.CancelButton.Top;
  DefaultBevelTop := WizardForm.Bevel.Top;
  DefaultOuterHeight := WizardForm.OuterNotebook.Height;

  // Pages (Size)
  WizardForm.Height := Custom_Height;
  WizardForm.InnerPage.Height := WizardForm.InnerPage.Height + (Custom_Height - DefaultHeight);
  WizardForm.LicensePage.Height := WizardForm.LicensePage.Height + (Custom_Height - DefaultHeight);

  // Pages (Color)
  WizardForm.color := Page_Color_Alternative1;
  WizardForm.FinishedPage.Color  := Page_Color;
  WizardForm.InfoAfterPage.Color := Page_Color;
  WizardForm.InfoBeforePage.Color := Page_Color;
  WizardForm.InnerPage.Color := Page_Color;
  WizardForm.InstallingPage.color := Page_Color;
  WizardForm.LicensePage.Color := Page_Color;
  WizardForm.PasswordPage.color := Page_Color;
  WizardForm.PreparingPage.color := Page_Color;
  WizardForm.ReadyPage.Color := Page_Color;
  WizardForm.SelectComponentsPage.Color  := Page_Color;
  WizardForm.SelectDirPage.Color  := Page_Color;
  WizardForm.SelectProgramGroupPage.color := Page_Color;
  WizardForm.SelectTasksPage.color := Page_Color;
  WizardForm.UserInfoPage.color := Page_Color;
  WizardForm.WelcomePage.color := Page_Color;

  // Controls (Size)
  WizardForm.InfoAfterMemo.Height := (Custom_Height - (DefaultHeight / 2));
  WizardForm.InfoBeforeMemo.Height := (Custom_Height - (DefaultHeight / 2));
  WizardForm.InnerNotebook.Height :=  WizardForm.InnerNotebook.Height + (Custom_Height - DefaultHeight);
  WizardForm.LicenseMemo.Height := WizardForm.LicenseMemo.Height + (Custom_Height - DefaultHeight);
  WizardForm.OuterNotebook.Height := WizardForm.OuterNotebook.Height + (Custom_Height - DefaultHeight);
  WizardForm.ProgressGauge.Height := Custom_ProgressBar_Height
  WizardForm.ReadyMemo.Height := (Custom_Height - (DefaultHeight / 2));
  WizardForm.Taskslist.Height := (Custom_Height - (DefaultHeight / 2));
  WizardForm.WizardBitmapImage.Height := (Custom_Height - (DefaultHeight - DefaultBevelTop));
  WizardForm.WizardBitmapImage2.Height  := (Custom_Height - (DefaultHeight - DefaultBevelTop));

  // Controls (Location)
  WizardForm.BackButton.Top := DefaultBackTop + (Custom_Height - DefaultHeight);
  WizardForm.Bevel.Top := DefaultBevelTop + (Custom_Height - DefaultHeight);
  WizardForm.CancelButton.Top := DefaultCancelTop + (Custom_Height - DefaultHeight);
  WizardForm.LicenseAcceptedRadio.Top := WizardForm.LicenseAcceptedRadio.Top + (Custom_Height - DefaultHeight);
  WizardForm.LicenseNotAcceptedRadio.Top := WizardForm.LicenseNotAcceptedRadio.Top + (Custom_Height - DefaultHeight);
  WizardForm.NextButton.Top := DefaultNextTop + (Custom_Height - DefaultHeight);
  WizardForm.Top := DefaultTop - (Custom_Height - DefaultHeight) div 2;
  //WizardForm.ProgressGauge.Top := (DefaultHeight / 2)

  // Controls (Back Color)
  WizardForm.DirEdit.Color  := Page_Color_Alternative2;
  WizardForm.GroupEdit.Color  := Page_Color_Alternative2;
  WizardForm.InfoAfterMemo.Color := Page_Color_Alternative2;
  WizardForm.InfoBeforeMemo.Color := Page_Color_Alternative2;
  WizardForm.LicenseMemo.Color := Page_Color_Alternative2;
  WizardForm.MainPanel.Color := Page_Color;
  WizardForm.PasswordEdit.Color  := Page_Color_Alternative2;
  WizardForm.ReadyMemo.Color := Page_Color_Alternative2;
  WizardForm.Taskslist.Color := Page_Color;
  WizardForm.UserInfoNameEdit.Color  := Page_Color_Alternative2;
  WizardForm.UserInfoOrgEdit.Color  := Page_Color_Alternative2;
  WizardForm.UserInfoSerialEdit.Color  := Page_Color_Alternative2;

  // Controls (Font Color)
  WizardForm.FinishedHeadingLabel.font.color  := Font_Color;
  WizardForm.InfoafterMemo.font.Color  := Font_Color;
  WizardForm.FinishedLabel.font.color  := Font_Color;
  WizardForm.DirEdit.font.Color  := Page_Color_Alternative1;
  WizardForm.Font.color := Font_Color;
  WizardForm.GroupEdit.font.Color  := Page_Color_Alternative1;
  WizardForm.InfoBeforeMemo.font.Color  := Page_Color_Alternative1;
  WizardForm.LicenseMemo.font.Color  := Page_Color_Alternative1;
  WizardForm.MainPanel.font.Color := Font_Color;
  WizardForm.PageDescriptionLabel.font.color  := Font_Color;
  WizardForm.PageNameLabel.font.color  := Font_Color;
  WizardForm.PasswordEdit.font.Color  := Page_Color_Alternative1;
  WizardForm.Taskslist.font.Color  := Font_Color;
  WizardForm.UserInfoNameEdit.font.Color  := Page_Color_Alternative1;
  WizardForm.UserInfoOrgEdit.font.Color  := Page_Color_Alternative1;
  WizardForm.UserInfoSerialEdit.font.Color  := Page_Color_Alternative1;
  WizardForm.WelcomeLabel1.font.color  := Font_Color;
  WizardForm.WelcomeLabel2.font.color  := Font_Color;
  WizardForm.ReadyMemo.font.Color := Page_Color_Alternative1;
end;

Solution

Here is simple RTF document with many attributes changed:

And here is appropriate code for it:

{\rtf1\ansi\ansicpg1250\deff0\deflang1051{\fonttbl{\f0\fnil\fcharset0 Calibri;}{\f1\fnil\fcharset0 Times New Roman;}} {\colortbl ;\red0\green77\blue187;\red255\green0\blue0;} {*\generator Msftedit 5.41.21.2510;}\viewkind4\uc1\pard\sa200\sl276\slmult1\lang9\f0\fs22 Hello. This is \cf1 blue text\cf0 . \cf2 And this text is red\cf0 . This is \i italic \i0 & \b bold\b0 .\par \f1 Even changing font to Times is possible. \fs44 This text is 22 size.\f0\fs22\par \par \par }

Changing the color is possible with flag \cfX your text here \cf0 where X is your desired color number.

Colors are saved in colortbl in the head of document (as RGB values, black is missing):

{\colortbl;\red0\green77\blue187;\red255\green0\blue0;}

so black = cf0, blue = cf1, red = cf2 etc.

To assing new text simply assign your new text to RTFText variable:

WizardForm.InfoBeforeMemo.RTFText := '{\rtf1\ansi\ansicpg1250\deff0\deflang1051{\fonttbl{\f0\fnil\fcharset0 Calibri;}{\f1\fnil\fcharset0 Times New Roman;}}
{\colortbl ;\red0\green77\blue187;\red255\green0\blue0;}
{\*\generator Msftedit 5.41.21.2510;}\viewkind4\uc1\pard\sa200\sl276\slmult1\lang9\f0\fs22 Hello. This is \cf2 blue text\cf0 . \cf2 And this text is red\cf0 . This is \i italic \i0 & \b bold\b0 .\par
\f1 Even changing font to Times is possible. \fs44 This text is 22 size.\f0\fs22\par
\par
\par
}';

In the example above I changed color of blue text to red.