Hey!
Just build it.The little intricacies that you mention like Chrome Trim and such can be done with foil or as I did for years, Dry Brushing With testors (Little Bottle-Chrome Silver) they don't have to be perfect. I have seen Brand new cars with slightly crooked Bumpers and so on
Now that said. Pick fun colors that you would've seen on the real ones. Then think "Earl Scheib" Yup, many a car that was, say Pea Green Metallic(Pontiac's Moss Green) Became corvette Blue Metallic of maybe even Red!
Remember the adage applies here" It's Your Model Build it like you want too!"