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+## Tabs and toolbars to have different colors theme
+
+Remove follow lines:
+
+https://github.com/black7375/Firefox-UI-Fix/blob/4948226abe1c93e716e6b690e6098eda1223c706/userChrome.css#L101-L105
+
+```css
+  /** Selected Tab - Color like toolbar ***************************************/
+  #tabbrowser-tabs:not([movingtab]) > #tabbrowser-arrowscrollbox > .tabbrowser-tab > .tab-stack > .tab-background[multiselected="true"]:-moz-lwtheme, #tabbrowser-tabs:not([movingtab]) > #tabbrowser-arrowscrollbox > .tabbrowser-tab > .tab-stack > .tab-background[selected="true"]:-moz-lwtheme {
+    background-image: linear-gradient(var(--toolbar-bgcolor, transparent), var(--toolbar-bgcolor, transparent)), linear-gradient(var(--toolbar-bgcolor), var(--toolbar-bgcolor)), var(--lwt-header-image, none) !important;
+  }
+```
+
+## Unselected Tab Separators
+
+Try to change `background-color` [#4](https://github.com/black7375/Firefox-UI-Fix/issues/4)
+
+- `--tabs-border-color`
+- `--lwt-selected-tab-background-color`
+
+```css
+  /** Unselected Tab - Divide line ********************************************/
+  .tab-content::before,
+  .tab-content::after {
+  /*codes*/
+  background-color: var(--toolbarseparator-color) !important;
+  /*codes*/
+  }
+```
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