[Feature request] <title>Option for different background colors for alternate lines/rows.

Is there an existing issue for this?

• I have searched the existing issues

Description of the Issue

To improve readability, please provide a option to have alternate lines/rows with different background colors.

For e.g. one line would have a white background and the next a very light gray background.

Wonder why text editors haven't implemented this so far. Very useful if the notepad++ window is very wide.

Thanks for this great text editor.

Describe the solution you'd like.

See above, please provide a option to have alternate lines/rows with different background colors.

Debug Information

Notepad++ v8.8.6   (64-bit)
Build time: Oct  7 2025 - 13:44:28
Scintilla/Lexilla included: 5.5.7/5.4.5
Boost Regex included: 1_85
Path: D:\Notepad++ Portable\Notepad++64 Portable\notepad++.exe
Command Line: "F:\test.txt"
Admin mode: ON
Local Conf mode: ON
Cloud Config: OFF
Periodic Backup: ON
Placeholders: OFF
Scintilla Rendering Mode: SC_TECHNOLOGY_DEFAULT (0)
Multi-instance Mode: monoInst
asNotepad: OFF
File Status Auto-Detection: cdEnabledNew (for current file/tab only)
Dark Mode: OFF
Display Info:
    primary monitor: 1920x1080, scaling 100%
    visible monitors count: 1
    installed Display Class adapters: 
        0000: Description - Microsoft Basic Display Adapter
        0000: DriverVersion - 10.0.26100.1
        0001: Description - AMD Radeon(TM) Graphics
        0001: DriverVersion - 31.0.21923.11000
OS Name: Windows 11 Enterprise LTSC 2024 (64-bit)
OS Version: 24H2
OS Build: 26100.2605
Current ANSI codepage: 1252
Plugins: 
    mimeTools (3.1)
    NppConverter (4.7)
    NppExport (0.4)

Anything else?

No response

The issue names no source file, test, or entry point. Start by locating the editor rendering code and the configuration path for display options, then determine how alternating line backgrounds would fit there. Done means the option produces alternating row colors and is covered by appropriate validation.