Base16 for XFCE4 Terminal
mousepad ~/.config/xfce4/terminal/terminalrc in the terminal
Copy lines from
base16-eighties.dark.terminalrc file to your terminalrc file.
Note: If the terminalrc file is not empty, do not copy the
[Configuration] line, as there should be only one in the beginning of the file.
Close and open your terminal again to see changes