ANSWERS:

- Some words related to colour: blue, grey, violet, china blue, colors, hue, amber, silver, bloody (here maybe related to the colour red?)

- Some words related to painting: paint, palette, sketch, portraits, frameless

- There are words related to Nature (starry night, a summer's day, hills, trees, daffodils, breeze, winter chills, snowy land, flaming flowers, swirling clouds, haze, morning fields, amber grain, silver thorn, bloody rose, virgin snow) and words related to the people he painted (weathered faces in pain, frameless heads, strangers, ragged men in ragged clothes)

- Some examples of contrast: a summer's day and the darkness in his soul; breeze and winter chills; color and snowy linen land; starry night and morning fields; the contrast of darker colours like blue and violet and bright colours like red (flaming flowers that brightly blaze) and amber; weathered faces in pain and Vincent's loving hands; silver thorn and bloody rose.