Color vs. Clear--New Poll Question!

This is the magical device called The Propagator that my girlfriend grew her seeds in.  She covered the various parts with the different colors.  It's my new poll question to see if you can guess which part grew the best plants.  You have a week to think about it!  I will just say that the information in the books is correct about which color helps plants grow the best!  So put your thinking caps and boots on!  We are getting some snow shortly!  Talk to you later.