Este é O Galaxy Primes (1959) por E. E. Smith .
A partir da sinopse editorial:
They were four of the greatest minds in the Universe: two men, two women, lost in an experimental spaceship billions of parsecs from home. And as they mentally charted the Cosmos to find their way back to earth, their own loves and hates were as startling as the worlds they encountered. Here is E. E. Smith's great new novel....
O personagem Lola é apelidado de "Brownie":
I'd like that." She smiled winningly. "And my friends call me 'Brownie'."
Assim como na pergunta, os cabelos e as roupas de Lola são verdes, descritos nas primeiras linhas do livro:
Her hair was a brilliant green. So was her spectacularly filled halter. So were her tight short-shorts, her lipstick, and the lacquer on her finger-and toe-nails. As she strolled into the Main of the starship, followed hesitantly by the other girl, she drove a mental probe at the black-haired, powerfully-built man seated at the instrument-banked console.
Aqui está um link direto para a versão do Project Gutenberg: link