the colorations of its sound

They also worry that new owners could meddle with Steinway's time-honored and time-consuming manufacturing methods. Steinway spends almost a year building each grand piano, and pianists fret that an assembly line speedup at the company's two factories would spoil what they prize: the delicacy of a Steinway's touch, the colorations of its sound.
他們還擔心新主人會插手施坦威歷史悠久和耗時的生產方式。施坦威生產一台三角鋼琴要花費一年時間，鋼琴家們擔心在公司的兩家工廠里安裝高速流水生產線會毀掉他們最珍惜的東西：施坦威鋼琴精美的手感與聲音中豐富的色彩。



  colorations
 a variety of musical or vocal expression:the subtle colorations of big-box speakers
 3 （音声の）調子.