bash-it themes must not set the TERM variable. The used terminal emulator is responsible to set this variable correctly.

themes/axin/axin.theme.bash

@@ -3,10 +3,6 @@
 # Axin Bash Prompt, inspired by theme "Sexy" and "Bobby"
 # thanks to them
 
-if [[ $COLORTERM = gnome-* && $TERM = xterm ]]  && infocmp gnome-256color >/dev/null 2>&1; then export TERM=gnome-256color
-elif [[ $TERM != dumb ]] && infocmp xterm-256color >/dev/null 2>&1; then export TERM=xterm-256color
-fi
-
 if tput setaf 1 &> /dev/null; then
     if [[ $(tput colors) -ge 256 ]] 2>/dev/null; then
       MAGENTA=$(tput setaf 9)