Want to change your theme color? It’s so much easy just you need to go appearance >> customize >> Colors menu. Here you can change some essential colors from here.
You can change global background color from here. For effect on your page global background color, page must be box layout.Primary color effect on link, button color. You can easily change this color from here.Primary hover color effect on link or button hovered with cursor, you can change this color from here.Secondary color effect on section, content and text background.You can change muted text color form here.You can change muted background color form here.Browser header color you can change from here. This color works only mobile view.
Menu under main menu called sub menu or dropdown menu background color you can change from here.Dropdown link color or menu color you can change from here.This is the same as step-2 when you hover the mouse on menu.