The three primary colors are red yellow and blue, so the only option that would work would be yellow! I hope this helps! :)
Answer:
Yes
Explanation:
I feel like they could help the onlookers of whatever they are taking a picture of to understand, and create more of an understanding of what they are looking at. This could also give lookers insight as to what the photographer was thinking (what they were feeling about the situation) when he/she took the picture
It helps relieve pressure and it calms down your brain so you can think clearly.
