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We have developed a voice-controlled assistive system to improve the independence of people with Cerebral Palsy (CP) to do art painting. The system allows users who have severe motor deficiency in limbs to use their voice command to control a painting canvas to be within their reachable painting zone, and to dispense colour material on a rotatory palette for painting. Trials conducted at a CP Welfare Home show that the system allows the CP user to paint more independently and with minimum assistance from the care-worker.