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Aqua (user interface)
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<p>Aqua is the <a href="/facts/Graphical_user_interface/wBlQFWDP">graphical user interface</a>, <a href="/facts/Design_language/f9433umR">design language</a> and <a href="/facts/Theme_(computing)/N08U51pq">visual theme</a> of <a href="/facts/Apple_Inc./oTJYta3k">Apple</a>'s <a href="/facts/MacOS/Y93vVpTm">macOS</a> and <a href="/facts/IOS/mK5cggH5">iOS</a> <a href="/facts/Operating_system/8XTuvMh2">operating systems</a>. It was originally based on the theme of <a href="/facts/Water/0lkXnJPK">water</a>, with droplet-like components and a liberal use of reflection effects and <a href="/facts/Translucency/PRryNNW6">translucency</a>. Its goal is to "incorporate color, depth, translucence, and complex textures into a visually appealing interface" in macOS applications. At its introduction, <a href="/facts/Steve_Jobs/fQpja1hx">Steve Jobs</a> noted that "... it's liquid, one of the design goals was when you saw it you wanted to lick it". </p><p>Aqua was first introduced at the 2000 <a href="/facts/Macworld_Conference_%2526_Expo/38NYwP2a">Macworld Conference & Expo</a> in <a href="/facts/San_Francisco/cb9l7hbC">San Francisco</a>. Its first appearance in a commercial product was in the July 2000 release of <a href="/facts/IMovie/nXmcvVwf">iMovie</a> 2, followed by <a href="/facts/Mac_OS_X_10.0/twuQ9J75">Mac OS X 10.0</a> the following year. Aqua is the successor to <a href="/facts/Appearance_Manager/w1oeBWSJ">Platinum</a>, which was used in <a href="/facts/Mac_OS_8/Vde5S5hl">Mac OS 8</a>, <a href="/facts/Mac_OS_9/33QM3VqV">Mac OS 9</a>, and developer releases of <a href="/facts/Rhapsody_(operating_system)/KYa1NJIl">Rhapsody</a> (including <a href="/facts/MacOS_Server/KQxtGUEA">Mac OS X Server</a> 1.2). The appearance of Aqua has changed frequently over the years, most recently and drastically with the release of <a href="/facts/MacOS_Big_Sur/RV8pCK4d">macOS Big Sur</a> in 2020 which Apple calls the "biggest design upgrade since the introduction of Mac OS X." </p>