How can the user be offered a choice of several colors to color part of the interface?

Question

User interface

You need to offer the user a choice of 4 colors during the final stage of preparing the publication. All publications on the site will have the effects of multi-colored stickers, so the user is expected to choose this color.
Interface for both desktop and mobile devices.

1. How to show colors?
   It is clear that the drop-down list of the form: white, yellow, red, blue is not native...
   There is such an option (from dribbble.com):
   
2. Should these colors be used for demonstration immediately in the part of the interface where the user is located?
   
3. Are there similar examples?
   

Answer 1

May be useful
qtip2.com/demos#styling

Answer 2

how they usually do it