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Why does Vim display wrong colors in tmux?
This line checks if enviromental variable $TERM starts with st (therefore st*) and makes sure to use true color because current “indexed colors” (8 bits = 2^8 = 256 colors) is not enough for us. We want tmux to use “true colors” (24 bits = 2^24 = 16777215 colors). Here we could add some more lines just to be sure we will match the value of TERM.
How can I get Vim to show all the colors?
If that doesn’t make vim display all the colours, test if your terminal (I’m not sure if you’re testing with just one terminal emulator) is compiled to support the 256 colour palette – download and run the below Perl script from the terminal emulator in question. PS. I assume you’ve already corrected the typo jordanbrock noticed.
What to do if Vim doesn’t work?
If it still doesn’t work, you can run Vim using: This sets the environment variable just for a one-off vi execution.
Is there a way to force tmux to 256 color?
As an alternative, as Holy Mackerel said, you can force tmux to 256color via: [Solucion] [1] that may disturb your vision and make Vim unpleasant to use for an extended period of time.
Why is my Vim terminal set to 256 color?
The terminal in Tmux is set to screen-256-color. Because of limitations in the way Vim handles termguicolors, this means I end up having to manually set t_8f and t_8b values. If anyone has any suggestions on what I can try to fix this issue, I’m all ears. Turns out this was a bug in Vim itself.
Why is iTerm2 truecolor not working in Neovim?
The theme always works in Neovim (v0.1.4), whether I run in Tmux or in iTerm directly. This leads me to believe it is not an issue with the theme, or with Tmux. The terminal in Tmux is set to screen-256-color. Because of limitations in the way Vim handles termguicolors, this means I end up having to manually set t_8f and t_8b values.
How to change the screen color in tmux?
If that’s not an option, you can check TERM inside .bashrc and not change it if it’s already screen-256color. In the shell starting tmux, check that $TERM is either xterm-256color or screen-256color. See how to change $TERM: