diff --git a/theme-github-auto.css b/theme-github-auto.css
index 449cf91..e55da04 100644
--- a/theme-github-auto.css
+++ b/theme-github-auto.css
@@ -1183,4 +1183,9 @@
   .ui.primary.labels .label {
     background-color: #768390 !important;
   }
+
+  // timeline view icon color
+  .repository.view.issue .comment-list .timeline-item .badge .svg {
+    fill: #fff !important;
+  }
 }
diff --git a/theme-github-dark.css b/theme-github-dark.css
index 5c8008a..4a17155 100755
--- a/theme-github-dark.css
+++ b/theme-github-dark.css
@@ -800,3 +800,8 @@ textarea:focus,
 .ui.primary.labels .label {
   background-color: #768390 !important;
 }
+
+// timeline view icon color
+.repository.view.issue .comment-list .timeline-item .badge .svg {
+  fill: #fff !important;
+}