Here's a link to a diagram for an electronic 2 tube F96T12 ballast which has a black, a white, 2 blues, and a red. Even though its still a T12 it is different than an old T12 magnetic ballast that has a black, white, red, and blue.
Most likely it wires like this...
*One new ballast blue to fixture blue.
*Other new ballast blue to fixture red.
*New ballast red to both sockets at the other end of the fixture.
*New ballast white to building white.
*New ballast black to building black.
T12 rapid start (2 pin tubes) electronic ballasts wire the same way was T12 rapid start magnetic ballasts.
T12 instant start (single pin tubes) electronic ballasts wire differently than T12 instant start magnetic ballasts.
T8 modified instant start (2 pins shorted) wire differently than T12 rapid start.
Always check the ballast wiring diagram printed on the ballast.