I can't get the link to work, but I assume the white bled? If you can scrape it all off, try spotting black back on with a brush. It happens a lot on plastic sailing ship models because they typically have a lot of cast on texture. You'll be able to see the spots, but I doubt anyone else will.
Here's a trick. After you get tape set, spray the edges of it with the original base color. That makes the bleed the same as whats under the tape. Then go with white. Or vise versa.