Close QtCreator if you have it open then save this VisualStudio.xml file in your Qt Creator styles directory. The directory is located as follows:
Unknown; I haven't installed Qt Creator in OS X yet (will update)
Then in Qt Creator look under
Tools->Options->Text Editor->Font & Colors and select the Color Scheme “VisualStudio”.
I will probably make adjustments to this over time as this is just my first cut. Send me any improvements.