Bug 1917787 - Fix the Offline Use treeitem colors. r=aleca

Differential Revision: https://phabricator.services.mozilla.com/D222115

--HG--
extra : amend_source : 58518fd3305d2af3da0745049c53e5c9a830913a

mail/themes/shared/mail/msgSelectOffline.css

@@ -39,6 +39,7 @@ treechildren::-moz-tree-image(syncCol) {
 }
 
 treechildren::-moz-tree-image(syncCol, synchronize-true) {
+  fill: currentColor !important;
   fill-opacity: 1;
 }
 

mail/themes/shared/mail/preferences/preferences.css

@@ -418,6 +418,16 @@ checkbox {
   margin-inline: 0;
 }
 
+treechildren::-moz-tree-row(selected) {
+  background-color: var(--in-content-item-selected) !important;
+  border-color: transparent;
+  outline-color: transparent;
+}
+
+treechildren::-moz-tree-cell-text(selected) {
+  color: var(--in-content-item-selected-text);
+}
+
 .align-no-label {
   margin-inline-start: 4px;
 }
@@ -699,6 +709,12 @@ checkbox {
   border-radius: unset;
 }
 
+#synchronizeTree treechildren::-moz-tree-twisty(selected, focus),
+#synchronizeTree treechildren::-moz-tree-image(folderNameCol, selected, focus) {
+  fill: color-mix(in srgb, currentColor 20%, transparent) !important;
+  stroke: currentColor !important;
+}
+
 /**
  * Connection dialog
  */