background: #FFFF00 !important;  /* Yellow background */
   color: #000000 !important;       /* Black text */

   background: #FFFF00 !important;  /* Yellow background */
   color: #000000 !important;       /* Black text */

Doing a "find" ends up showing a greenish (so I'm told) background with white text. Want to guess which "find" in the attached image is difficult for me to find? What I would like: Find (focus): yellow text on black background Find All: white text on black background Yes, of course it would be nice if that would auto switch to black on yellow if the website default is black background. I can hack userContent.css and get the selection function to work: /* General highlight (for text selection, etc.) */ ::selection { background: #FFFF00 !important; /* Yellow background */ color: #000000 !important; /* Black text */ } I can hack userContent.css and get the Find All (sans the focus) to work. But firefox always provides the focus with white on green. Even if I do something like this: /* Customize the color of highlighted search text */ input[type="search"]:focus::selection { background: #FFFF00 !important; /* Yellow background */ color: #000000 !important; /* Black text */ } I tried several themes. No change. I tried changing Windows Preferences. No change. There must be a way to make this "find" feature useful for me.