Sure! Here's an implementation of the game you described:
Color Game
Score: 0
To play the game, you can copy this code into a file with a `.html` extension, and open it in a browser. The game will be displayed and you can start playing by clicking on the colored circles. The objective is to click on the circle that matches the background color. The score will be updated accordingly, and if you click on the wrong color, it will show a message with your final score.