To comply with a requirement in this Part to affix a label to a number plate:
(a) each character on the label must be legible;
(b) the colour of the label must be distinguishable from the colour of the following:
(i) any character on the label;
(ii) if the label is affixed to a number plate – the number plate;
(iii) if the label is affixed to a part of the vehicle – the part of the vehicle;
(iv) if the label is affixed to a part that is attached to the vehicle – the part attached to the vehicle.