Tweaks to the Inkpot style

Added missing categories with customized colors for Field, Occurences,
Static and VisualWhitespace.

Removed highlighting for the 'Local' category, since at least I consider
the white names a little messy. In general we've considered the
highlighting of locals less useful than highlighting the members.

Task-number: QTCREATORBUG-2490

share/qtcreator/styles/inkpot.xml

@@ -18,11 +18,16 @@
   <style name="DisabledCode" foreground="#a0a0a4" italic="true"/>
   <style name="Doxygen.Comment" foreground="#737dd5"/>
   <style name="Doxygen.Tag" foreground="#4e5ab3"/>
+  <style name="Field" bold="true"/>
   <style name="Keyword" foreground="#808bed"/>
   <style name="Label" foreground="#e76000"/>
   <style name="LineNumber" foreground="#8b8bcd" background="#2e2e2e"/>
   <style name="Link" foreground="#0000ff"/>
+  <style name="Local"/>
   <style name="Number" foreground="#506bbd"/>
+  <style name="Occurrences" foreground="#000000" background="#616161"/>
+  <style name="Occurrences.Rename" foreground="#000000" background="#ff6464"/>
+  <style name="Occurrences.Unused" foreground="#808000"/>
   <style name="Operator" foreground="#409040"/>
   <style name="Parentheses" foreground="#ffff00"/>
   <style name="Preprocessor" foreground="#409040"/>
@@ -30,9 +35,10 @@
   <style name="SearchResult" foreground="#000000" background="#ffef0b"/>
   <style name="SearchScope" foreground="#000000" background="#f8fafc"/>
   <style name="Selection" foreground="#ffffff" background="#678db2"/>
+  <style name="Static" foreground="#cb6ecb"/>
   <style name="String" foreground="#ffcd8b" background="#404040"/>
   <style name="Text" foreground="#cfbfad" background="#1e1e27"/>
   <style name="Type" foreground="#ff8bff"/>
-  <style name="Local" foreground="#ffffff"/>
   <style name="VirtualMethod" italic="true"/>
+  <style name="VisualWhitespace" foreground="#646482"/>
 </style-scheme>