Since updating to 1.0.8, my custom themes fail to compile, as the base colour variables are missing (variable @gray is undefined). While this is a problem that could be fixed in my theme by setting those variables myself, this will also affect everyone using the nylas-mail-theme-starter, which is still the canonical basis for themes.

Because it causes a JS error, it also means I can't get far enough to be able to change the theme through the UI.