Adding color to the Text's metadata feat/text-color

[LDelPinoNT]

Is your feature request related to a problem? Please describe.
I have a branded manual which section title's are in a specific color. I would like to chunk the PDF into section using color information.

Describe the solution you'd like
A clear and concise description of what you want to happen.
When using partition_pdf with "fast" strategy, the color of the text is stored in the metadata. (And the documentation reflects it).

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
I already tried to use the "by_title" chunking system but some text.category are wrong or the section is chunked to be 500 chars aprox despite to set the max_partition to None.

Additional context
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Using unstructured from docker image.