Input:
<div style="-apple-color-filter: apple-invert-lightness()">
    <span style="color: blue; background-color: #EEE">This text is blue</span>
    <span style="color: yellow; background-color: maroon">This text is yellow</span>
</div>

Output:
NSParagraphStyle:
Alignment 4
    LineSpacing: 0
    ParagraphSpacing: 0
    ParagraphSpacingBefore: 0
    HeadIndent: 0
    TailIndent: 0
    FirstLineHeadIndent: 0
    LineHeight: 0/0
    LineHeightMultiple: 0
    LineBreakMode: 0
    Tabs: ()
    DefaultTabInterval: 36
    Blocks: (
)
    Lists: (
)
    BaseWritingDirection: 0
    HyphenationFactor: 0
    TighteningForTruncation: YES
    HeaderLevel: 0 LineBreakStrategy 0
[This text is blue]
    NSBackgroundColor: #eeeeee (sRGB)
    NSColor: #0000ff (sRGB)
    NSFont: Times-Roman 16.00 pt.
    NSKern: 0pt
    NSStrokeColor: #0000ff (sRGB)
    NSStrokeWidth: 0
[ ]
    NSFont: Times-Roman 16.00 pt.
    NSKern: 0pt
    NSStrokeColor: #000000 (sRGB)
    NSStrokeWidth: 0
[This text is yellow]
    NSBackgroundColor: #800000 (sRGB)
    NSColor: #ffff00 (sRGB)
    NSFont: Times-Roman 16.00 pt.
    NSKern: 0pt
    NSStrokeColor: #ffff00 (sRGB)
    NSStrokeWidth: 0
[\n]
    NSFont: Times-Roman 16.00 pt.
    NSKern: 0pt
    NSStrokeColor: #000000 (sRGB)
    NSStrokeWidth: 0