If you need to customize the theme in terms of size, color and other settings, simple click Advanced tab and you will see themes which can be customized. Click on desired one and click Customize Properties button and you will see all settings for this theme.
The following are settings that you can change.
If you do not like any decoration on photos, such as leaves, hearts and jumping lines, please delete the swf file in option for Decoration. You can also use your swf file as the decoration.
After you make changed, click Refresh to preview the slideshow with customized theme.