All the research I found says colors. I usually wear blue denim overalls and a denim chore coat. My chickens are very friendly and flock around me but one day I had my brown coveralls on and they ran from me. It took forever to get them in their house. This has happened on several occasions. When I wear my usual attire, all is right again.
and their scratch grain. I'm still in my pajama Pants. I have one pair that has outlined stars on them. Every time I wear those the girls and my one rooster jump up pecks and pulls them. All I know is I give chickens more credit now that I have them. I never knew they were so smart.