as something in prompt-toolkit or xonsh, I think the former messes around with the colours. I had discussions on this years ago but can't find them now. (GitHub search is broken for xonsh)
To reproduce just point $XONTRIB_PROMPT_STARSHIP_BOTTOM_CONFIG to your normal starship config and see the difference.
I have just switched from my own code to this contrib and I I found an issue.
For the bottom toolbar to have the expected colour s from starship you need to add
as something in prompt-toolkit or xonsh, I think the former messes around with the colours. I had discussions on this years ago but can't find them now. (GitHub search is broken for xonsh)
To reproduce just point $XONTRIB_PROMPT_STARSHIP_BOTTOM_CONFIG to your normal starship config and see the difference.