I think the answer is 'purity' as it makes the most sense. Purity is represented by the color white, while green is either jealousy or happy/calming(rebirth). New ideas can be symbolized by green, as in a green flag or a green light.
B. They became more interested in spirituality
Fallingwater<span>, also known as the Edgar J. </span>Kaufmann<span> Sr. Residence, is a house designed by American architect Frank Lloyd Wright in 1935 in rural southwestern Pennsylvania, 50 miles southeast of Pittsburgh, and is part of the Pittsburgh Metro Area. The house was built partly over a waterfall in Bear Run at Rural Route 1 in the Mill Run section of Stewart Township, Fayette County, Pennsylvania, in the Laurel Highlands of the Allegheny Mountains . by the help of CAD </span><span> Falling Water playable in Half Life and rendered via CAD</span>