xrandr --current | grep -e " connected" -A1 | grep -E '[0-9]+.[0-9]+*|$'

alias    grey-grep="GREP_COLOR='1;30' grep --color=always"
alias     red-grep="GREP_COLOR='1;31' grep --color=always"
alias   green-grep="GREP_COLOR='1;32' grep --color=always"
alias  yellow-grep="GREP_COLOR='1;33' grep --color=always"
alias    blue-grep="GREP_COLOR='1;34' grep --color=always"
alias magenta-grep="GREP_COLOR='1;35' grep --color=always"
alias    cyan-grep="GREP_COLOR='1;36' grep --color=always"
alias   white-grep="GREP_COLOR='1;37' grep --color=always"

xrandr --current | grep -e " connected" -A1 | green-grep -E '[0-9]+.[0-9]+*|$'
xrandr --current | grep -e " connected" -A1 | yellow-grep -E '[0-9]+.[0-9]+*|$'
xrandr --current | grep -e " connected" -A1 | cyan-grep -E '[0-9]+.[0-9]+*|$'