diff --git a/quarto/slides-template00/index.qmd b/quarto/slides-template00/index.qmd
index 1ada2e8..3c0c8b8 100644
--- a/quarto/slides-template00/index.qmd
+++ b/quarto/slides-template00/index.qmd
@@ -14,8 +14,8 @@ format:
     css:
       - css/default.css
       - css/callouts-html.css
-    theme: [league]
-          # NOTES. serif, moon, night, dark seem to work
+    theme: [solarized]
+          # NOTES. league, serif, moon, night, dark seem to work
           # NOTES. blood,beige, simple seem not be created
     footer: <https://quarto.org>
 ---