All the graphics included in Handdrawn Pro are really “hand-drawn” and designed exclusively for this theme, you will not find them anywhere else. Since they comes as icons or inline svg code you can change the color of the graphics directly from Customizer.
In most cases you can select the style of a graphic element (for example the line divider in the home page). You can also select the “random” style, in that case WordPress will display a different style each time the page is displayed (but not in the case you have a cache system activated). Another example of the random mode is the comments section which is characterized by a few lines made with svg code. These lines are displayed in random mode , so each page will look different from the others.