You will need to submit for a notification of change of vehicle colour.

1. Go to http://www.onemotoring.com.sg, on the top menu, click on "Log In", then "Singpass"

2. Once you have login with your Singpass, click the "Vehicle Hub" on the left side, then on the top menu click on "Ownership", then "Vehicle Scheme/Specifications", tick the box to agree the Terms and Conditions and click "Next", then "Amend my vehicle specifications"