Support for BT keyboard and inverted screen?

[ploum]

Hello,

I'm looking for a small and solid ereader to travel. My biggest needs are very low and orange light on the screen and a support for inverted mode (written white on black).

I'm currently looking at the Monte Cristo 4 https://onyxboox.com/boox_monte-cristo4 but I*don't know if it supports inverted screen.

Also, I've seen that it supports BT*keyboard. Can it be used to take notes? Is there software support for that? That would be really awesome so I*can write my journal while on the go without having my phone.