I would go with a white top. The dark blue top would not work well with that bright medium blue the car is painted. There simply is not enough contrast. That blue is also a very vibrant color and should be mixed only with another vibrant color. There is a certain sense of theater to it that must be maintained by any complimentary color you should choose to use. White stands out against it, but a darker blue would not. If it were a more mundane blue or a darker color then you would use the dark blue. Remember: You want your style elements to have a cohesive feel and theme to them. Certain colors call for certain complimentary elements. There may be no concrete rules in Hot Rodding, but there are rules to what works together and what doesn't. As for stripes, they are a no-no on a car with a vinyl top and would look too busy. Had you eliminated the top they might have worked, but with the top they won't. Also, I would not use Chevy style stripes on an Oldsmobile. It's just wrong and it makes it look like you didn't want an Olds and had to settle when you wanted a Chevy. Stripes should always be done in a style used by the brand of the car in question.