My favorite color has been green since I stopped using a night light. Literally. I had a night light that used bulbs the size of the large outdoor Christmas lights, so Mom would put the colored ones in. Whatever color happened to be in my night light was my favorite color. The last bulb that was in my night light was green. Then I didn't need the light anymore and my favorite color continued to be green.
This fascination with green has also contributed to my fascination with frogs. Along with all my frog stuff, I have lots of green stuff, too. Anything that comes in color (sheets, towels, sweatshirts, pens, etc.), I get it in green.