Implementing a dark mode theme is more than just inverting colors; it requires careful consideration of color theory and user experience (UX) to prevent eye strain and maintain readability. Crucially, pure white text on a pure black background creates too much contrast, causing a ‘halation’ effect for some users. Instead, designers should opt for muted dark grays for the background and off-white or light gray for the text. Furthermore, using CSS media queries (prefers-color-scheme: dark) allows the theme to automatically adapt to the user’s system preferences, providing a seamless and accessible experience.