It is a good theme. Very similar to RaphGL's Dracula Dark Theme; but with an even darker color choice. Using only the Firefox Editor tool, you did a great job. I've also seen your other "Night With Stars" theme, where the blue is very warm and reminiscent of the background of a starry sky; but the address bar is too brightly. Try blending the colors of your theme with its title: Night With Stars? The colors are: the blue background of the sky, the white of the stars, the silver of Venus a little yellow of Mars. Nothing more.