I am pretty satisfied by the round headlights of CD 100..Infact i consider it as a plus point..Rectangular ones do not look good as it has sorta big frame..I could have installed Deluxe Headlights but in my opinion it is better with stock Lights..Why..Because when you observe naked/muscle bikes they have they big round headlights which compliment the bike features..CD 100 is a bike which will look much better with round lights..I have observed Piaggio too has round lights but i think its smaller than CD 100,in my opinion piaggio's light is smaller than it should be.
If you want a sporty CD 100 you will have to change its entire Tank/taillight/rear mudguard and many others ,which obviously aint happening.