/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
<style>
    html {
        --bg-color: blue;
        --color: green;
        --accent: lightseagreen;
        --mycolor: orchid;
        --mygray: lch(from var(--mycolor) l 0 h);
    }
</style>
</head>
<body>
<script>
    // rgb(from ...)

    // Testing no modifications.
    test_valid_value(`color`, `rgb(from rebeccapurple r g b)`, `rgb(102, 51, 153)`);
    test_val