fix dark theme with text in tinyeditor

styles/dark.less

@@ -55,6 +55,12 @@ html.dark-mode {
         background-color: @color-dark-background;
     }
 
+    // Change text color in TinyEditor in Dark mode
+    .mce-content-body {
+                color: #A5A4A4;
+            }
+
+
     #logo {
         // FIXME: is there a better way to make the logo darker?
         //        `mix-blend-mode: soft-light` makes it slightly too dark

styles/embed.less

@@ -93,3 +93,7 @@
 .rcmail-inline-buttons {
     margin: 0;
 }
+
+& when (@dark-mode-enabled = true) {
+    @import "dark";
+}