You can customize every WordPress theme from their Theme Options. Every WordPress theme comes with the Theme Options. You will find these theme options under the appearance. In some themes, it is under the Settings.
1. I use WordPress Premium Betheme for all my websites.
2. In the Betheme, the theme options are under appearance.
3. Customization WordPress theme :-
In this way you can customize your wordpress theme. If you have any question, please feel free to contact me.