Maybe a little TMI, but I'm worried...

Has anyone experienced bright neon yellow urine? I just changed my prenatal vitamins. Same brand just different type of prenatal (rainbow light) and I also have been craving sunflower seeds and have been eating them throughout the day(I know I don't need the salt. Lol) Those are the only two changes in my eating habits. Could they be the cause? Or am I just dehydrated?