Hello,
Thank you very much for choosing our theme and for contacting us.
Installing demo content doesn’t create a site that is an identical copy of our demo site because it has a big number of pages and images that take to much time to complete.
Most images you see on our site are not included in our theme package and will not be imported, because usually, a site owner uploads his own. Most images have a “placeholder image”
You can extract images and icons from our demo via the inspector. You can select and upload your icons from this source. https://www.flaticon.com/
As for the block it is on your page you just need to set the color background on each column https://prnt.sc/sddnc7 you can view this video tutorial on how to do that https://wpbakery.com/video-academy/add-row-column-background-wpbakery-page-builder-wordpress/?v=9025a1ae8c64
Best Regards