Reach AA contrast ratio level (#1296)
diff --git a/themes/prism.css b/themes/prism.css
index 6d7d8a2..9010cb6 100644
--- a/themes/prism.css
+++ b/themes/prism.css
@@ -104,7 +104,7 @@ pre[class*="language-"] {
.token.url,
.language-css .token.string,
.style .token.string {
- color: #a67f59;
+ color: #9a6e3a;
background: hsla(0, 0%, 100%, .5);
}