And to put a story in the fatal color made it as reprehensible to most people as a yellow aster.

A vase of fresh yellow asters sat on the vanity counter.

Rand Mine later became the Yellow Aster Mine but then labour unrest led to frequent unexplained fires and infectious diseases took their toll.

"Another Watcher, I believe?" She plucked a yellow aster and twirled it absently between her fingers.