Why my eyes are tired after looking at 0AD screen (playing, observing, lobby reading, etc.)

[Deicide4u]

@BeTe

I'm bit biased here, as it is my mod and all, but you could try installing the Imperia Vetera mod for alpha 9. Just to see if that old "look" will suit your eyes. It's there in my signature, or here if you aren't logged in. You'd need the Alpha 9 exe in order to install it. I'm assuming you have Wine installed if you're playing Brood War on Linux.
https://releases.wildfiregames.com/0ad-r11339-alpha-win32.exe
 

Of course, there is no Multiplayer, and the features are pretty bare-bones. Nevertheless, the game did look different at one point in time.