Password Strength Meter

Hi everyone. I've been working on a lot of exciting things since I've joined the design team at Facebook. One of the recent projects I've been tacking was showing a password strength meter on the password step of the registration form specifically on Android. As the user types his/her password, we will be inline validating the strength of it in and tell them if it looks good or not. I'm having a bit of a difficulty with the look of the "average" one as it's too yellow and looks a little hard to read.

I'm attaching a file with all the explorations I've done so far and I would super appreciate feedback.

Thanks!