Returns true if both instances of the objects contain the same values. Instances might be different, this method will return if their values are equal. Instances can be null.
Fill style used to fill the background of the comment. If you are using a solid color, only Indexed colors or RGB are allowed here, if you specify something else, the color will be converted to RGB. It might be a gradient fill or a texture too. If null, default fill style will be used.