Help me.....i hav some scratches near the fog lamps and little bleow..it was cause by a granite rock...?

i hav an i 20 which is in silky biege color (golden-ish)...i was takin the car out of my house and i din see the granite rock under it and ran over and made up some scratches ..soon i used petrol and cleaned up ...some scratches went...but the little deeper ones are still there...pls tell me some effective quick and not too expensive way for fixin it......it is on the front bumper near the fog lamps and little below....pls help me