Make it possible to hide "most visited" on nnnnnnntp

chrome/browser/resources/new_tab_theme.css

Index: chrome/browser/resources/new_tab_theme.css
diff --git a/chrome/browser/resources/new_tab_theme.css b/chrome/browser/resources/new_tab_theme.css
index 88e3fcce8986e2de3286f0e038d2554901011eff..7500a4f89a1edd5d6e77a29334bdf5971934b4a6 100644
--- a/chrome/browser/resources/new_tab_theme.css
+++ b/chrome/browser/resources/new_tab_theme.css
@@ -102,7 +102,8 @@ body {
   color: $$5; /* COLOR_NTP_LINK_UNDERLINE */
 }
 
-.section > h2 {
+.section > h2,
+#closed-sections-bar > button {
   color: $$7; /* COLOR_NTP_SECTION_HEADER_TEXT */
 }
 
@@ -110,7 +111,8 @@ body {
   color: $$8; /* COLOR_NTP_SECTION_HEADER_TEXT_HOVER */
 }
 
-.section.hidden:not([noexpand]) > h2:hover {
+.section.hidden:not([noexpand]) > h2:hover,
+#closed-sections-bar > button:hover {
   color: $$8; /* COLOR_NTP_SECTION_HEADER_TEXT_HOVER */
 }