Kandinsky’s feelings on color, as noted in Concerning the Spiritual in Art:

Yellow -

“warm”

“cheeky and exciting”

“disturbing for people”

“typical earthly color”

“compared with the mood of a person it could have the effect of representing madness in color”

Red -

alive, restless, confidently striving towards a goal, glowing, strength, energy, joy, glowing passion, sure strength, youthful

Orange -

radiant, healthy, serious