COLOR: Sets the default console foreground and background colors.

Microsoft Windows [Version 10.0.19045.3693]
(c) Copyright 1985-2023 Microsoft Corp.

C:\\WINDOWS>

Sets the default console foreground and background colors.

COLOR [attr]

  attr        Specifies color attribute of console output

Color attributes are specified by TWO hex digits -- the first
corresponds to the background; the second the foreground.  Each digit
can be any of the following values:

    0 = Black       8 = Gray
    1 = Blue        9 = Light Blue
    2 = Green       A = Light Green
    3 = Aqua        B = Light Aqua
    4 = Red         C = Light Red
    5 = Purple      D = Light Purple
    6 = Yellow      E = Light Yellow
    7 = White       F = Bright White

If no argument is given, this command restores the color to what it was
when CMD.EXE started.  This value either comes from the current console
window, the /T command line switch or from the DefaultColor registry
value.

The COLOR command sets ERRORLEVEL to 1 if an attempt is made to execute
the COLOR command with a foreground and background color that are the
same.

Example: "COLOR fc" produces light red on bright white

The `COLOR` command in Windows Command Prompt is used to change the color of the text and background in the console. Here are some examples with comments: Example 1: Reset color to default:

COLOR

Description: This command resets the colors to their default values, usually Black Text on a White Background. Example 2: Change text color:

COLOR 0A

Description: Here the text color is set to light green (`A`) and the background is set to black (`0`). Example 3: Change background color:

COLOR 4E

Description: This command changes the background color to dark red (`4`) and the text color to yellow (`E`). Example 4: Combining colors:

COLOR 1F

Description: Here the text color is set to blue (`1`) and the background color is set to light white (`F`). Example 5: Using color code in a batch script:

@ECHO OFF
REM Change the colors
COLOR 3B
ECHO This text is now in light yellow on dark blue.

Description: This batch script changes the colors from light yellow to dark blue and then prints a corresponding message. Example 6: Changing colors using the ECHO statement:

ECHO [1;31mThis text is in light red. [0m

Description: This example uses ANSI color code (used here as an escape sequence with `ECHO`) to change the text color to light red. Note: Color changes with `COLOR` are limited to the current command prompt session and are not saved permanently. If you want to use `COLOR` in a batch script or command line interaction, I recommend using the color numbers and letters to improve readability. Use `COLOR /?` for a list of available color codes.

There are a few points to note when using the `COLOR` command in the Windows Command Prompt: 1. Limited Color Palette: Windows Command Prompt only supports a limited color palette. Color changes are limited to the available colors and background combinations. 2. Color Code Format: The color code consists of two parts - the first part for the background and the second part for the text. Each part can be a number from 0 to 15 or a letter from 0 to F. Note that the interpretation of letters and numbers can vary. 3. Inappropriate Color Combinations: Some color combinations may result in hard-to-read or unreadable text. Choose colors carefully to ensure readability. 4. Not Permanent: The changes made using `COLOR` are not permanent. If you close and reopen the CMD window, the default colors will be restored. 5. No RGB colors: `COLOR` does not support RGB colors. The color palette is based on predefined colors and is limited. 6. Affects consistency: Changes made by `COLOR` affect the entire prompt session and can affect UI consistency, especially when colors are used in scripts. 7. ANSI Color Code: You can also use ANSI color code sequences to represent colors in the prompt. This method can be more flexible, but does not support all terminals. 8. Support in PowerShell: Note that in PowerShell the `COLOR` command is not normally available. Instead, PowerShell uses other methods like `Write-Host` with color parameters.

Write-Host "This text is in yellow on blue" -ForegroundColor Yellow -BackgroundColor Blue

9. Batch scripts: When using `COLOR` in batch scripts, keep in mind that this applies to the entire session and may be affected by other scripts. 10. Compatibility: Note that the use of colors in the Command Prompt may not be the same on all systems or terminal emulators. It may not be available on older or non-Windows systems. 11. Consider readability: Make sure that the color combinations you choose improve readability and do not affect the user experience. Using colors in the Command Prompt is a useful way to improve visibility and structure. However, be sure to use them carefully to maintain consistency and readability.