That's a pretty good scratch, sorry about that. I just did something similar and I had to have mine repaired at a body shop. Total price was about $600. There's a picture of my damage about half-way down this thread:
http://www.ct200hforum.com/forum/lexus-ct200h-appearance-body/122082-road-rash-bumper-boo-boo.html
Unfortuantely I think body shop is going to be the way to go for you.
http://www.ct200hforum.com/forum/lexus-ct200h-appearance-body/122082-road-rash-bumper-boo-boo.html
Unfortuantely I think body shop is going to be the way to go for you.