Sentence:  In a period of increasing industrialization and the palette of grey, brown, and black that came to dominate the modern city, <WSD>greens</WSD> provided a refreshing contrast, seemingly bringing the outdoors in. 
Meaning of the word marked with <WSD> tags:  The colour of growing foliage, as well as other plant cells containing chlorophyll; the colour between yellow and blue in the visible spectrum; one of the primary additive colour for transmitted light; the colour obtained by subtracting red and blue from white light using cyan and yellow filters.