@Echo Off
SETLOCAL EnableDelayedExpansion
for /F "tokens=1,2 delims=#" %%a in ('"prompt #$H#$E# & echo on & for %%b in (1) do     rem"') do (
  set "DEL=%%a"
)
call :colorEcho 0a "This is colored green with a black background!"
echo.
call :colorEcho a0 "This is colored black with a green background!"
echo.
pause
exit
:colorEcho
echo off
 "%~2"
findstr /v /a:%1 /R "^$" "%~2" nul
del "%~2" > nul 2>&1i