Hi Lucy,
Before I started to have sz. I started having wicked migraine headaches. There is often a contection between migraines and epilepsy. You mentioned that certain colors can cause the problem. This happened to me and I found out that I was photosensitive which means certain colors can trigger sz. for a person when they are photosensitive. I found florescent green, amber, and bright white the 3 main colors that caused me to have a sz.
Arguments can lead to stress and stress can lead to sz. for people. The 2 main things that can trigger sz. the most is stress and lack of sleep. Here' are the main things that can cause epilepsy:
inherited from family genes, trauma, lack of oxygen, a bad scare, tramatic brain injury, drug or alcohol abuse, or a bad blow to the head. Brain tumors can also cause sz. for people. Sometimes video games have also.
My advice is for you to see a neuro and take it from there. Here's wishing you well and May God Bless You!

Sue