sadness 

is

stuffy rooms and dark fields / silver-blue with spots, stripes, of navy

happy means

sunshine on the snow / cumulonimbus gray and electric blue

worry

is simply

pinched eybrows / olive green or blood red

hope is more

neon pink; navy / mango ice cream in july

fear is definitely

a dull orange, luminescent whitish-blue / razor blades and empty bottles

while

excitement is 

river water and rollercoasters / medium purple and rusty-color

i´d say relaxing

seems to be

warm comforter, a cup of iced tea / pastel blue, tree-trunk brown.

stress

is

turquoise and blobs of peach / a scratched-up desktop, eight textbooks

emotions vary.