Dark theme: minor polishing

Change-Id: I1bcd54122e16897baf7dc0260f93828447c5a9da
diff --git a/src/injections/ccdarktheme.css b/src/injections/ccdarktheme.css
index 475d451..fb95972 100644
--- a/src/injections/ccdarktheme.css
+++ b/src/injections/ccdarktheme.css
@@ -36,6 +36,10 @@
   background-color: var(--TWPT-primary-background)!important;
 }
 
+.material-content > header .app-title-button {
+  color: var(--TWPT-link)!important;
+}
+
 .material-content > header material-button,
     .material-content > header notification-bell material-icon {
   color: rgba(255, 255, 255, .87)!important;
@@ -180,6 +184,11 @@
   color: rgba(255, 255, 255, .54)!important;
 }
 
+.material-content .action-bar .review-button.reviewing {
+  color: #1a73e8!important;
+  background: #dae7ff!important;
+}
+
 .material-content .action-bar material-button.starred {
   color: #fbbc04!important;
 }
@@ -409,6 +418,11 @@
   border: var(--TWPT-card-border)!important;
 }
 
+ec-thread .finished-question .next-question {
+  color: var(--TWPT-link)!important;
+  border-color: var(--TWPT-link)!important;
+}
+
 .material-content .action-bar material-button.has-activity {
   color: #1a73e8!important;
 }