Hmm , black is very very common. Think about what clothes you often wear. If its like red and then you paint your scooter green , it will look ugly. Black is common used because it is the best colour to match with anything.If you want to be special and not so common, try something else like pink or yellow or brown or something.
You can also not paint it but make it look nice. I have my scooter's neck painted black with yellow polka dots all over. You can try that too like a stock silver bar with black polka dots.
You can take some black tape or whatever and tape round those bars for fun or something. Up to you.
Good luck with painting it and make sure , if you paint it , have lots of patients. I had none and ugly paint job.