@saaduk bhai jaan yes it can be possible u can change the needle with white one, regarding change of colour of background, actually there is only one fluoroscent tube light(its kind of a thin tubelight), which covers speed,rpm,fuel and temp gauge, u can use car window tinting paper but it will also change the colour of needle also.
But if u want to change the colour of lines not needles then stick the tinting paper on the backside of the meter, use only to cover sides of meter donot cover the whole meter.