Just found someone to help me out, and there is a spark. Even though the spark is red in color and the guy says it should be purple. Is that true?

About the 180 degree, I broke the end slot on the new rotor, so i took it off, and put on the one from the old rotor. But obviously, i wasnt sure whether or not i put the slot 180 degree reversed, so after the car didnt start for the first time, i removed it, and took off the slot off the spindle, and reversed it. Reinstalled and the same thing, wont start.