I did a google search and found this regarding the wind deflector:
http://www.dynamicautoconcepts.com/FAQS.aspx
They explain exactly how they do it on their particular design.
Just my own personal preference, but I wouldn't want anything that would interfere with rearward visibility. I'm 5'4" and I already have issues with seeing out the back of the car so I would not want any illuminated anything visible in my rear view mirror that might block rear vision.
Don't know anything about the headlight tail light thing, although even if it were do-able I can't imagine any on-the-clock Honda employee who would advise you to attempt that kind of modification since if it failed miserably you could go back to them and say "you said it would work!" and then they get put on a hook for your botched situation.