[Dark theme] Adjustment for work states in thread list

Change-Id: Iee13fc685fec96a759cc6e9425a62353c62b709c
diff --git a/src/injections/ccdarktheme.css b/src/injections/ccdarktheme.css
index a903fbb..24359ad 100644
--- a/src/injections/ccdarktheme.css
+++ b/src/injections/ccdarktheme.css
@@ -191,7 +191,8 @@
   color: #928e89!important;
 }
 
-ec-thread-summary material-expansionpanel ec-safe-html.body {
+ec-thread-summary material-expansionpanel ec-safe-html.body,
+    material-expansionpanel .issue-tracking-work-state {
   color: var(--TWPT-primary-text)!important;
 }