I Need To Know Where I Can I Do This I Tryed Everything A TO Z

i tryed every custom browser theme maker you think of from themepath to chrome theme ceator sorry misspell . but i used to use firefox they have this thing call firefox colors you change up every detail of on the broswer colora from text,backgrounds,broders,icons,speacers.pop up backgrounds and everything you think of . is there a site i did not try yet . i tryed every big name ones out there they do only 50% to 80% custonizion . looking for 100%. THIS SCREENSHOTS I USED WHEN I USED FIREFOX AND IT’S FROM THERE OWN CUSTOM PAGE YOU CAN USE AT https://color.firefox.com/