diff --git a/index.html b/index.html
index 2bab750..0b7d16b 100644
--- a/index.html
+++ b/index.html
@@ -397,6 +397,7 @@ <h3>Install</h3>
 <h3>Write</h3>
 
 <pre><code class="io">doFile(System ioPath .. "/willful.io")
+doFile(System ioPath .. "/ansio.io") # if you want command line colours on *nix (https://github.com/JoshCheek/ansio)
 Foo := Object clone do( bar := method("bar"))
 
 describe("Foo") do(
diff --git a/willful b/willful
index 1ab672a..fdc0a60 100755
--- a/willful
+++ b/willful
@@ -4,6 +4,17 @@ filter := false
 filterKey := nil
 filterVal := nil
 
+# set colours if they are not already set
+# this allows users to load a lib that defines fgGreen and fgRed on Sequence
+# that is appropriate for their system (ie with aniso for *nix)
+if(Sequence slotNames contains("fgGreen") not,
+  Sequence fgGreen := method(self)
+)
+if(Sequence slotNames contains("fgRed") not,
+  Sequence fgRed := method(self)
+)
+
+
 getTests := method(dir,
   tests = List clone
   dir fileNames foreach(file, if(file findSeq("-test"), tests append(dir path .. "/" .. file)))
@@ -21,9 +32,9 @@ runTests := method(tests,
       if(shouldFilter == false or test hasTestsForFilter(filterKey, filterVal),
         writeln("\n - Testing " .. test description)
         "   " print
-        results := test run(block(passed, if(passed, "." print, "f" print)), filterKey, filterVal, overrideFilter)
+        results := test run(block(passed, if(passed, "." fgGreen print, "f" fgRed print)), filterKey, filterVal, overrideFilter)
         writeln(" " .. results at("passed") .. "/" .. results at("total") .. " Passed")
-        results at("errors") foreach(error, writeln("   " .. error))
+        results at("errors") foreach(error, writeln("   " .. error fgRed))
       )
     )
   )