The "14 years" part of the headline is particularly annoying. This thing that happens several times a year will happen the second time this month next week! It's like a headline about getting three paychecks in a month and how it won't happen again for six months. Technically true, but it's still a regular paycheck.
It's not actually blue. If there are two full moons in the same calendar month, the second full moon is referred to as "blue". It will be the same color it always is.
It would be a helluva lot cooler if it actually was blue, but alas...