I get a pink tinted screen, on the N2+. Tried different DMs (Gnome, XFCE, KDE), and a second N2+ I have. Changing my monitor's icc profile to a generic sRGB in GNOME and KDE does nothing.

Using the same monitor and cable on my regular desktop I not have this problem.

I'm not aware of this being a common problem for your device but if you Google, you will find that this is a fairly common issue with a myriad of different causes.  
If you search the forum for "pink" you will find a very small number on various different boards.

Is it just that monitor, or all TV's and monitors?  Often it is one particular monitor that the board doesn't like.
Do the vendors supported OS images have the same issue?  If so then it might be a hardware issue.
Is it just the one Armbian image kernel version or branch (legacy/current/edge) or all? 
Is it just the one Armbian image release (Jammy/Bullseye etc) or all? 

Pink apparently is common for poor connections bad cables or too low signal strength (maybe power supply).

https://www.gadgetreview.com/why-is-tv-screen-pink

good luck.

Just to be clear, the image is similar to this https://forums.developer.nvidia.com/t/grays-have-a-pink-tint/194727 . It's the grays that are tinted, not the whole screen

 

The only image what does not have this problem is the official odroid ubuntu image running the 4.9 kernel https://wiki.odroid.com/odroid-n2/os_images/ubuntu/20220629

Sid running the latest kernel still has this problem.

 

It appears to be quite a common problem:

https://youtu.be/lbGdNwNut_0?t=6

https://youtu.be/r-WPRwTrEbY?t=260