need to add this theme to theme oh my zsh and then change zshrc theme.
first copy theme to directory theme oh my zsh with this command:
cp t2colorful.zsh-theme ~/.oh-my-zsh/themes
or
cp t2colorful2.zsh-theme ~/.oh-my-zsh/themes
second change zshrc for use this theme.
use your favorite editor and change zshrc in home directory same this:
vim ~/.zshrc
then change ZSH_THEME to this:
ZSH_THEME="t2colorful"
or
ZSH_THEME="t2colorful2"
now restart your terminal and enjoy t2colorful (;