Added ColorString and Color.

Color just sends the color codes.  Use Reset() to reset the
colors back to normal.

color.go

@@ -26,6 +26,14 @@ func Underline(input string) string {
 	return "\x16" + input + "\x16"
 }
 
-func Color(color int, input string) string {
+func Reset() string {
+	return "\x0f"
+}
+
+func Color(color int) string {
+	return fmt.Sprintf("\x03%02d", color)
+}
+
+func ColorString(color int, input string) string {
 	return fmt.Sprintf("\x03%02d%s\x0f", color, input)
 }

color_test.go

@@ -17,7 +17,7 @@ func TestColor(t *testing.T) {
 	for sent, expect = range map[colortext]string{{Text: "One", Color: 1}: "\x0301One\x0f",
 		{"Two", 2}:   "\x0302Two\x0f",
 		{"Three", 3}: "\x0303Three\x0f"} {
-		got = Color(sent.Color, sent.Text)
+		got = ColorString(sent.Color, sent.Text)
 		if got != expect {
 			t.Errorf("Got %s, expected %s", got, expect)
 		}