I think there should be a section on the car designer that has different size, colour, look variation that you put on your car such as trim, grill plates, chrome bumpers etc
Im not sure if I understand your question/advice good, but changing size can be done by selecting the object and then use the arrows to size and rotate it.
Not all objects yet, but in the betatesters version, a lot of objects already have paint, plastic or chrome finish. This has been taken care of already.
The part on where you can make your bumpers black/greyish plastic has already been stated in another post and the devs are looking into that.
If you want these chrome materials now already, there is a topic about this already how to mod your game to get more chrome parts.
What i meant by details are things like plastic trims, pieces of metal/plastic that add to the look of the car. have auto-fitting trims around headlights
also the headlamps and tail lights don’t really match or form properly to the car you have designed but im guessing that will be in the next update
In what way don’t they form properly to the car? Could I get you to post a screenshot of where it hasn’t worked?