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)

themes/binaryanomaly/binaryanomaly.theme.bash

@@ -1,13 +1,7 @@
 #!/usr/bin/env bash
 
-# Set term to 256color mode, if 256color is not supported, colors won't work properly
-if [[ $COLORTERM = gnome-* && $TERM = xterm ]] && infocmp gnome-256color >/dev/null 2>&1; then
-  export TERM=gnome-256color
-elif infocmp xterm-256color >/dev/null 2>&1; then
-  export TERM=xterm-256color
-fi
 
-# Detect whether a rebbot is required
+# Detect whether a reboot is required
 function show_reboot_required() {
   if [ ! -z "$_bf_prompt_reboot_info" ]; then
     if [ -f /var/run/reboot-required ]; then

themes/sexy/sexy.theme.bash

@@ -2,10 +2,6 @@
 # Screenshot: http://cloud.gf3.ca/M5rG
 # A big thanks to \amethyst on Freenode
 
-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)