Not so fast, you've changed the original premise. Asking a question in the Xtreme Linux forum it was assumed you only wanted an answer about the Linux version.
There is no Mac version of Xtreme so that is automatically a no.
For the Windows version the answer is a resounding YES.
You can include Photoshop .aco swatch files and Photoshop colour books.
See attached image showing a portion of the Color Gallery from my installed Xtreme Pro 4.0 colour palettes.
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