diff --git a/index.html b/index.html
index 0fc8c40..b9fc077 100644
--- a/index.html
+++ b/index.html
@@ -1052,6 +1052,10 @@ <h2>Commonly Misspelled Terms</h2>
 <dd>hyphenate when used as an adjective or noun, not when built is a
 verb</dd>
 
+<dt>color space</dt>
+
+<dd>two words</dd>
+
 <dt><abbr title="document type definition">DTDs</abbr></dt>
 
 <dd>no apostrophe (see [<cite><a href=