If you can read the word "quickly" slowly, or you can say the word "backwards" forwards, you may just do well with this little exercise (which thankfully is not part of the requirements fot getting a driver's license).
I must admit this is a bit challenging for me because I have a bit of a mental tick that goes back to my speech therapy days in public school. They were very specific about me prounouncing the thing that I am thinking about. This has proved inavaluable when I preach - but compicates below.
Try to say the name of the colors - not what is spelled. Of course, in Canada, the UK, and many other parts of the world, try to say the name of the colours - not what is spelled.