Meaning of color

In parts of my taxonomy my backgrounds will be a blur of a certain color. I decided to do that in order to represent the mood of the two people in the scene with the color.

Here are the websites I looked at to get the meaning of the color.
http://crystal-cure.com/color-meanings.html

I also looked at this image

Based on the research the kids part when they are running together will be a mix of pink and yellow. (The meanings are in the image). The part with the mum's fighting will be in black, grey and red for parts of the meanings also in the images above. 

Here are the tries 

I will try them again in the end and see if they fit in with the rest of background style.