Dark Mode Since Before It Was Cool developer t-shirt. About using dark terminal themes and text editors before every IDE made it a standard feature - claiming veteran status in the dark mode preference wars. For programmers who've been using dark backgrounds since the days when you had to manually configure color schemes and it wasn't a trendy UI option. The cartoon cat design captures the smug satisfaction of being early to something now mainstream. Works when you want to flex your terminal hipster credentials or just acknowledge you've been coding in dark rooms for decades. Tech apparel for developers who used Vim with dark themes before dark mode was a marketing feature.