draw a comfortable room, in nature-season, temperature light-time of day, night life. The first picture I use blue to symbolize sky at night. The green symbolize grass land. The violet symbolize river. Dark color means night camp. The second picture, I use bubbles means in the bathroom.
In the third picture, I use light color means sunlight, I use red and yellow two warm color mean it is warm.
I put pink color between yellow and blue. pink color looks different.
In the other picture, these color look cool and warm in color contrast.
in this visual symbols, I draw the hornet to explain it. The illustration hornet change to image related graphic, then change to concept related graphic, finally become the arbitrary graphic