Why can't I access the rgba property of the a theme color setting in my css.liquid file?

Technical Q&A
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1

I try to access the rgba property of a color setting inside a css.liquid file like this:

{{ settings.color1.rgba }}

This should output 225 225 225 / 1.0 But the result is blank.

When I use:

{{ settings.color1 }}

The hex value of the color is the output.

So it appears that I can access the setting but not its properties…