Added some more coloring to nant-color (especially for tests)

nant-color

@@ -46,6 +46,12 @@ def colorize(str)
     str.sub!(/(Build Succeeded)/i, green('\1'))
     str.sub!(/(Compilation succeeded)/, green('\1'))
     str.sub!(/(\d+ warning\(s\))/, yellow('\1'))
+    str.sub!(/(Build Failed)/i, red('\1'))
+
+    str.sub!(/(Tests run: \d+, Failures: 0, Not run: 0,.*)/, green('\1'))
+    str.sub!(/(Tests run: \d+, Failures: 0, Not run: [1-9].*)/, yellow('\1'))
+    str.sub!(/(Tests run: \d+, Failures: [1-9].*)/, red('\1'))
+    str.sub!(/(Test Case Failures:)/, red('\1'))
     return str
 end