Variable TEXT_MARKUP_LINE_COLORS`Const`

TEXT_MARKUP_LINE_COLORS: readonly [
    "#c49000",
    "#388e3c",
    "#0288d1",
    "#d32f2f",
    "#ef6c00",
    "#7b1fa2",
] = ...

Higher-contrast colors used at full opacity by the default context menu's Underline, Squiggly, and StrikeOut rows.