diff --git a/toolkit/themes/linux/global/in-content/common.css b/toolkit/themes/linux/global/in-content/common.css
index a6b67e845caf..18ce56b0dc65 100644
--- a/toolkit/themes/linux/global/in-content/common.css
+++ b/toolkit/themes/linux/global/in-content/common.css
@@ -78,6 +78,13 @@ xul|*.radio-label-box {
   -moz-appearance: none;
 }
 
+/* Override OS-theme-based color to make it visible
+   on dark color themes. */
+xul|radio:not([disabled="true"]):hover,
+xul|checkbox:not([disabled="true"]):hover {
+  color: var(--in-content-text-color);
+}
+
 xul|*.numberbox-input-box {
   -moz-appearance: none;
   border-width: 0;