# Init a new instance tmux
$ tmux
# Override xterm-256color:Tc for active true colors of TMUX
$ tmux set-option -ga terminal-overrides ",xterm-256color:Tc"
# Disconnect of session (without exit)
$ tmux detach
# Join in session (no starting a new session)
$ tmux attach
# Congratulations, your tmux config options will be load when join in session detachedhttps://deductivelabs.com/blog/tech/using-true-color-vim-tmux/ https://www.philipdaniels.com/blog/2019/tmux-and-vim-in-truecolor/
P.S.: The file is called .tmux.conf not .tmux.config.