You can possibly use code in userChrome.css to have more distinct buttons.

• https://www.userchrome.org/what-is-userchrome-css.html
• https://www.userchrome.org/firefox-89-styling-proton-ui.html

See also this subreddit forum.

• https://www.reddit.com/r/FirefoxCSS/

Too many information .It is any way to easy change it .??

I find this but is Yellow .I need old dark completely fill folders as has 88 version.

/* Standard folder -- on Toolbar and Menus */
#PlacesToolbarItems toolbarbutton[container="true"] .toolbarbutton-icon,
:-moz-any(
#PlacesToolbarItems,
#PlacesChevronPopup,
#BMB_bookmarksPopup,
#bookmarksMenu) menu[container="true"] > .menu-iconic-left > .menu-iconic-icon,
/* Standard folder -- in Sidebar, Library, Add/Edit Bookmark dialog */
:-moz-any(
#bookmarks-view, 
#editBMPanel_folderTree, 
#placesList, 
#placeContent) treechildren::-moz-tree-image(container), 
#editBMPanel_folderMenuList > .menulist-label-box > .menulist-icon,
#editBMPanel_folderMenuList menupopup menuitem {
  fill: #e8bb00 !important; /* slightly muted gold */
}

Try this code in userChrome.css. Note that this only work on the Bookmarks Toolbar and in some menus and in the side bar. In the Library you still have the default icons.

#bookmarks-view treechildren::-moz-tree-image(container),
.bookmark-item[container]{
 list-style-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAYElEQVQ4je2SsQ2AMAwEbw4GSI1EnSJN5vKobAAbOE2QLAQKDhQUeenKv3dh+CACqGEDZo9AgQBMlQSsHomaspXsp8uukDvBE0LtNldaoMDSyRD8SpCB6CQfAqH/iYS3KQAcW43BZ9FqAAAAAElFTkSuQmCC) !important;
 -moz-image-region: auto!important;
}

The square circuit is 88 a little darker then in 91 which parameter responds for reduce darkness .

I ask only about color "square circuit" only. the rest color in folders is good.

Only perimeter

You can change the fill color that is used to draw SVG images in your above code to any color.

• fill: #e8bb00 => fill: #000 !important; /*black*/

Sorry for too may question but I see also home page icons and navigator ----> also has different colors.

There is any way update only security patch to my Firefox 88 or copy all appearance buttons ,icons etc. from 88 to new ONE Firefox.?

Hi idude, There's a Firefox theme on the addons site called Photon Colors, which I found helps a lot.

Go to https://addons.mozilla.org/firefox/addon/photon-colors/ and click on Install Theme.

Creating a userChrome.css file and other ways of customizing Firefox that are not exposed in the interface are there for developers, not end-users.

Thank you but this is not what I asked .

Have all form 88 buttons view Generally appearance. OR update only security patch in 88 firefox without change view .

Hi idude, I don't understand what you mean by "Have all form 88 buttons view Generally appearance", but I would recommend you delete your userChrome.css file, install the recommended theme, then list any further tweaks you want to make, with the understanding that the tweaks are not officially supported.

I want to use Firefox 88 because I'm accustomed for this appearance . The new Firefox is totally different .

It is possible to update only security patch without change my Firefox .??

Hi idude, It's not possible. That's why the people here have been focusing on getting the latest version to appear how you want it.

If I have wish list would you help my change view in 92 .How to doing ?

1.change 2 Search Bars on top color from dim to white.(google place) 2.How to make more dark icons Home,and icons reload indicate ----> <------ on left Top 3. Show All bookmarks inside folders dark fill with dark color 4.Bookmark this page star --How to remove it. 5.How to connect split tab with Firefox on TOP as has 88

Thanks