reverting color setting and adding note

Lesson 6 has all points colored the same to start; modification reverts the previous change but adds a note to make sure that point colors are also changed during the lesson.

regression/finance_regression.py

@@ -30,13 +30,14 @@
 from sklearn.cross_validation import train_test_split
 feature_train, feature_test, target_train, target_test = train_test_split(features, target, test_size=0.5, random_state=42)
 train_color = "b"
-test_color = "r"
+test_color = "b"
 
 
 
-### your regression goes here!
-### please name it reg, so that the plotting code below picks it up and 
-### plots it correctly
+### Your regression goes here!
+### Please name it reg, so that the plotting code below picks it up and 
+### plots it correctly. Don't forget to change the test_color from "b" to "r"
+### to differentiate training points from test points.