Hello, mkmwong.
Thank you for contacting us and for using Elara. We appreciate it.
If the option is not there please make sure that you have installed and activated Kirki plugin. Without it, you’ll be missing some options in the customizer.
Then please go to Appearance -> Customize -> General Settings and switch off Show Example Content? option.
Hope this helps but if you have any additional questions, feel free to ask.
Kind regards.
Thanks! Just one extra question, how do I remove the color block from each page?
http://omnivoresplate.com/about/ e.g. between About and the actual content?
You’re welcome.
That colour block should be a featured image of a page. In order to set the featured image, please see http://www.wpbeginner.com/beginners-guide/how-to-add-featured-image-or-post-thumbnails-in-wordpress/.
If you don’t want to show it, please go to Appearance -> Customize -> Pages and switch off Show Featured Image ? option.
Hope this helps.
Kind regards.