手册里有说明:
Track control panel settings include:
● Whether to use custom track colors as a background color on track labels (in TCP and mixer) and to tint track panels (in TCP and mixer). These options are disabled by some color themes. See Chapter 11 for more info.
你的主题不支持,换个主题也许就有了,我换了Default 5.0 Nitpicky Edition这个选项就可选了