Color scheme for QT Creator based on Sublime Text 2 default color scheme. Tested on QT Creator v2.7.2.

QT - Monokai Color Scheme - monokai.xml

<?xml version="1.0" encoding="UTF-8"?>
<style-scheme version="1.0" name="Monokai">
  <style name="AddedLine" foreground="#3875d7"/>
  <style name="RemovedLine" foreground="#ff0000"/>
  <style name="Comment" foreground="#808080"/>
  <style name="CurrentLine" background="#3e3d32"/>
  <style name="CurrentLineNumber" foreground="#a0a19c" background="#3e3d32"/>  
  <style name="DiffFile" foreground="#a6e22e"/>
  <style name="DiffLocation" foreground="#0000ff"/>  
  <style name="DisabledCode"/>
  <style name="Doxygen.Comment" foreground="#808080" italic="true"/>
  <style name="Doxygen.Tag" foreground="#808080" bold="true" italic="true"/>
  <style name="Field" foreground="#e6e5e2"/>  
  <style name="Function" foreground="#a6e22e"/>
  <style name="Keyword" foreground="#f92672"/>  
  <style name="Label" foreground="#800000"/>  
  <style name="LineNumber" foreground="#a0a19c" background="#272822"/>
  <style name="Link" foreground="#66d9ef"/>    
  <style name="Local" foreground="#e6e5e2"/>
  <style name="Number" foreground="#ae81ff"/>  
  <style name="Occurrences" foreground="#000000" background="#b4b4b4"/>
  <style name="Occurrences.Rename" foreground="#000000" background="#ff6464"/>  
  <style name="Occurrences.Unused" foreground="#ff0000"/>  
  <style name="Operator" foreground="#e6e5e2"/>
  <style name="Parentheses" foreground="#ff0000" background="#c3e1ff"/>  
  <style name="Preprocessor" foreground="#f92672"/>  
  <style name="SearchResult" foreground="#ffffff" background="#2572b8"/> 
  <style name="SearchScope" foreground="#000000" background="#e2efff"/>   
  <style name="Selection" foreground="#e6e5e2" background="#49483e"/> 
  <style name="Static" foreground="#66d9ef"/>   
  <style name="String" foreground="#e6db74"/>   
  <style name="Text" foreground="#66d9ef" background="#272822"/>
  <style name="Type" foreground="#a6e22e"/>
  <style name="VirtualMethod" foreground="#66d9ef"/>
  <style name="VisualWhitespace" foreground="#3e3d32"/>  
  <style name="QmlTypeId" foreground="#800080"/>  
  <style name="Binding" foreground="#800000"/>
  <style name="QmlLocalId" foreground="#e6e5e2" italic="true"/>
  <style name="QmlRootObjectProperty" foreground="#e6e5e2" italic="true"/>  
  <style name="QmlScopeObjectProperty" foreground="#e6e5e2" italic="true"/>  
  <style name="QmlStateName" foreground="#e6e5e2" italic="true"/>
  <style name="QmlExternalId" foreground="#000080" italic="true"/>
  <style name="QmlExternalObjectProperty" foreground="#000080" italic="true"/>  
  <style name="JsScopeVar" foreground="#2985c7" italic="true"/>
  <style name="JsImportVar" foreground="#0055af" italic="true"/>
  <style name="JsGlobalVar" foreground="#0055af" italic="true"/>
</style-scheme>