Really random, but certain colors making my morning sickness worse?

Kate
I know this is really weird, but with my first pregnancy, I found that every time I saw something purple it made my nausea worse. I ended up having to stop using the What To Expect app because of it, lol. I'm now 8 weeks pregnant with my second and the past few days I've begun noticing that purple makes me queasy, and blue sometimes.....has anyone else ever experienced this? It's so weird, I've never even heard of this!