Windows XP Bliss fuses the most-viewed photograph on Earth with the glossiest UI candy the desktop era ever shipped. Charles O'Rear's Sonoma hillside rolls green under a cumulus-dotted blue sky while Microsoft's Luna theme layers beveled gel buttons, gradient title bars, and a glowing green Start orb on top. Everything is rounded, back-lit, and turned past realism — skeuomorphic plastic that wants to be touched. The mood is fresh-install optimism: boot up and everything is going to be fine, the grass is greener, the sky is bluer, and the button really does want to be clicked.