case-insensitive phrase query for string fields

[Matt Mitchell]

What's the recommended approach for handling case-insensitive phrase
queries? I've got this setup, but no luck:

<fieldType name="ci_string" class="solr.StrField">
      <analyzer>
         <filter class="solr.LowerCaseFilterFactory"/>
         <tokenizer class="solr.KeywordTokenizerFactory"/>
      </analyzer>
</fieldType>

So if I index a doc with a title of "Golden Master", then I'd expect a
query of q=title:"golden master" to work, but no go...

I know I must be missing something super obvious!

Matt