Theme option / Customize area is one of the main feature in our theme. They give you abilities to made a changes to your site without touching a single line of code.
“Customize” give you an ability to live preview changes on the site while “Theme Option” give you an ability to search through the options and do some specific task ( Add thumbnail size, Add Skin and Upload Custom font ) which will be explained later.
You can go to theme customize at “Appearance > Customize” section from wordpress admin area
You can go to theme option at “Goodlayers” section in wordpress admin area