docs: try darker text and shorter line height

Change-Id: I7fe3cdc0a0f5cdfd8bcb69b1e1a2d11d8b5301d3
diff --git a/tools/droiddoc/templates-sdk/assets/css/default.css b/tools/droiddoc/templates-sdk/assets/css/default.css
index 75e8dfd..e1b1789 100644
--- a/tools/droiddoc/templates-sdk/assets/css/default.css
+++ b/tools/droiddoc/templates-sdk/assets/css/default.css
@@ -20,8 +20,8 @@
   /* turned off ligatures due to bug 5945455 */ }
 
 body {
-  color: #444;
-  font: 14px/21px Roboto, sans-serif;
+  color: #000;
+  font: 14px/19px Roboto, sans-serif;
   font-weight: 400;
   letter-spacing:.1;
   padding:0 10px; }