Tweak highlighting colors.

highlighting/qtcreator/capnp.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE language SYSTEM "language.dtd">
 
-<!-- syntax highlighting for Kate and QtCreator -->
+<!-- Syntax highlighting for Kate and QtCreator.  To customize colors, see end of file. -->
 
 <language name="Cap'n Proto" version="0.5" kateversion="2.4" section="Sources" extensions="*.capnp" mimetype="text/x-capnp" license="BSD 2-clause" author="Kenton Varda (temporal@gmail.com)">
   <highlighting>
@@ -108,15 +108,22 @@
     </contexts>
   </highlighting>
   <itemDatas>
+    <!-- Since my highlighting approach is different from most programming languages, the contexts
+         don't fit nicely into the standard set, so I have to define colors explicitly.  A couple
+         of these, like "keyword" and "type", could be mapped to dsKeyword and dsDataType, but
+         there's a chance the user has mapped the colors for those things to things that would
+         conflict with the manually-defined colors here, which would probably be even more annoying
+         than having the colors be inconsitent from other languages.  So, I use manual colors for
+         everything, except comments, which I figure are less likely to have this problem. -->
     <itemData name="Normal"       defStyleNum="dsNormal"/>
-    <itemData name="Keyword"      defStyleNum="dsKeyword"/>
+    <itemData name="Keyword"      defStyleNum="dsOthers" color="#000099" bold="1"/>
     <itemData name="Id"           defStyleNum="dsOthers" color="#0099FF"/>
     <itemData name="Annotation"   defStyleNum="dsOthers" color="#999900"/>
-    <itemData name="Type"         defStyleNum="dsDataType"/>
-    <itemData name="KeyType"      defStyleNum="dsDataType" bold="1"/>
+    <itemData name="Type"         defStyleNum="dsOthers" color="#009900"/>
+    <itemData name="KeyType"      defStyleNum="dsOthers" color="#009900" bold="1"/>
     <itemData name="Value"        defStyleNum="dsOthers" color="#003399"/>
     <itemData name="Comment"      defStyleNum="dsComment"/>
-    <itemData name="Symbol"       defStyleNum="dsNormal" bold="1"/>
+    <itemData name="Symbol"       defStyleNum="dsOthers" bold="1"/>
   </itemDatas>
   <general>
     <comments><comment name="singleLine" start="#"/></comments>