A small RichText panel class annotated to match text about items. It sets an icon (empty) and a color for matched text and inherits from RichTextBase.
[RichTextPanel( @"\b[Ii]tems?\b" )]
public class RichTextItem : RichTextBase
{
//public override string ImagePath => "textures/ui/coin.png";
public override string Icon => "";
public override Color Color => new Color( 0.9f, 0.9f, 1f );
}