Lights

That four4th light looks mental.

Not legal in the UK though, it's the green light that is the problem.

The things you can't do:

1. Run blue lights if you're not an emergency service
   
2. Run green lights if you're not a paramedic/medical doctor
   
3. Put a red light facing forward
   
4. Put anything other than a red light facing backwards
   
   

A green light, facing backwards, is a guaranteed fine.

That may be no issue on a country lane, during the day... but in London during the evening? I suspect it's a matter of time.

Nice disclaimer they have on their page though, and the relevant law is here:
http://www.legislation.gov.uk/uksi/1989/1796/regulation/11/made

Really not going to be an issue outside of a city though.