Colors themes issues in calendar view and org-bullet

[cadamosto]

Hello,

I am very happy to get back on nvim with this orgmode plugin :-) but I struggle on color scheme definition to get something similar to my emacs config.

I use color scheme like zenburn and I have the following behaviour I can't customize ( (I also tried few others color schemes with the same results). I am not sure if the behaviours are 'normal' (i.e. unsupported), or if I missed something in the docs.

1- In calendar view: outdated TODO are displayed in a color that I can't find the definition in any colorscheme.
Zenburn for instance gives something with very dark red foreground on a dark background (not readable).
I tried the customize the group OrgAgendaScheduledPast but it does not have effect.

2- Bullets: I use akinsho/org-bullets.nvim but it seems bullets colors follows the color scheme only and they remain unchanged if I change the color of OrgTSHeadlineLevel1 (only the text is in the right color and the bullet color remains unchanged).

Thank you for any help!