This is the car mentioned that had NOS stripes applied...
It's really hard to see the blue in the pics like Jeff mentioned, they look black.
But, like seen, the reproduction blue stripes are nowhere near.
If you're trying to match original stripes, the only choice is likely going to be to source some NOS ones. Even if they aren't any good, at least they can be used to try and match something else available and have some made.