drawing text boxes with Sh and printf

box.sh

#!/bin/sh -e

clr="\033[0m"
pad="                    "
spad="                  "

setbg() {
  echo "\033[1;${1};${2}m"
}

setyx() {
  echo "\033[${1};${2}H"
}

clear 

left_row=10
left_col=20 

for color in 41 42 43 44 45 46; do
  printf "$(setyx ${left_row} ${left_col})$(setbg ${color} 37)${pad}${pad}"
  printf "$(setyx $((${left_row}+1)) ${left_col})$(setbg ${color} 37)${pad}${pad}"
  printf "$(setyx $((${left_row}+2)) ${left_col})$(setbg ${color} 37)${pad}${pad}"
  printf "$(setyx $((${left_row}+3)) ${left_col})$(setbg ${color} 37)${spad}TEST${spad}"
  printf "$(setyx $((${left_row}+4)) ${left_col})$(setbg ${color} 37)${pad}${pad}"
  printf "$(setyx $((${left_row}+5)) ${left_col})$(setbg ${color} 37)${pad}${pad}"
  printf "$(setyx $((${left_row}+6)) ${left_col})$(setbg ${color} 37)${pad}${pad}"
  left_col=$((left_col - 2))
  left_row=$((left_row - 1))
  sleep 1
done
printf "$(setyx 17 1)"