Changing the Linux shell foreground and background colors

Set to white on black background

Echo-e "/033[037;40m"

Color is selected by adding a dedicated sequence-basically a numeric value sandwiched between "/e[" and "M". If more than one numeric code is specified, separate them with semicolons.
Echo-e "/e[31;40m"
The first number (31) is the foreground color (red), the second number is (40) the background color (black)
Echo-e "/e[0m"
We need to use the "/e[0m" sequence to reset the color to normal.
/033[30m--/033[37m set foreground color (font colors)
/033[30m change the display color of a character to black
/033[31m change the display color of a character to red
/033[32m change the display color of a character to green
/033[33m change the display color of a character to light red
/033[34m change the display color of a character to blue
/033[35m change the display color of a character to purple
/033[36m change the display color of a character to light blue
/033[37m change the display color of a character to Gray

/033[40m--/033[47m Set background color
/033[40m setting the background color to black
/033[41m setting the background color to red
/033[42m setting the background color to green
/033[43m setting the background color to light red
/033[44m set the background color to blue
/033[45m set the background color to purple
/033[46m setting the background color to light blue
/033[47m setting the background color to gray

Changing the Linux shell foreground and background colors