As far as cops...I guess it just depends on how dark you make them, I've never been harrased by cops but then again I don't live in Va Beach. They are darker when not breaking, but when breaking or driving at night there's little difference from stock. I don't know about it being rice, but it does look good on certain color cars. And I don't know about amber, but I know they make trans. red, b/c my friend sprayed his tails with it and it made his amber dissapear.