TImageEnMView.ImageBackground
 
Declaration
property ImageBackground[idx: Integer]: TColor;
Description
Specifies the background color of the image frame.
For GIF files it is read from 
GIF_Background. For PNG, it is read from 
PNG_Background.
This value is only displayed in the TImageEnMView if ietxFillWithImgBackground is defined in 
ThumbnailOptionsEx.