Ideas & Plans

Plan	Status
Colorizing Command Prompt/Windows Terminal	🔵 Working on it
Windows Metrics	🟨
Mini-Store for themes	🟨

Extended Support to Windows 7 and 8.1	✅ Done (Version 1.0.5.0)
Right Click menus for colors to increase functionality	✅ Done (Version 1.0.5.1)

🟨 symbol means that I might or might not work on it. It is not guaranteed that this feature will be done.

Requirements:

Windows 7 and Windows 8.1: Use WinPaletter version starting from 1.0.5.0 and higher, and you should install at least .NET Framework 4.7, or better 4.8, then reboot your Windows (Necessary) Download it from here, choose "Runtime"
Windows 10 and Windows 11: .Net Framework 4.8 is already pre-installed, so no extra step is required.

You can modify Windows 7\8.1 LogonUI screen\Lock Screen, using Default Backgrounds, Wallpaper, Custom colors and external image, with effects can be applied like Blur, Acrylic Noise, Aero Glass,...

You will see perfect results if you force classic theme for Windows 11\10\8.1 (i.e All Windows elements will be colorized).
Windows 7 has a classic theme, so it is can be modified without using external tools to enable classic theme

If you don't use a classic theme (Windows 11\10\8.1), this will be applicable for some Windows Elements like Dialogs backcolor, labels forecolor and hilights only (i.e. not all Windows elements will be colored like buttons, progressbar and tabpages as they are handled/managed by Visual Styles, not Windows Registry Colors).

The Accent colors are stored in the Windows registry, one of them is stored as an array, and the others are stored singly in keys' values, and this is complex for a normal user. This program eases changing Windows elements' colors freely (i.e. You won't select one color as in Settings) and also save this to a theme file to apply it later or for sharing it.
Some screenshots for changing colors features:
Colorizing Modern Windows Elements (UWP/WinUI3) Inspired by u/aveyo and u/Egg-Tricky (Reddit): •https://www.reddit.com/r/Windows11/comments/sw15u0/dark_theme_did_you_notice_the_ugly_pale_accent/?utm_medium=android_app&utm_source=share •https://www.reddit.com/r/Windows11/comments/tkvet4/pitch_black_themereg_now_for_ctrlaltdel_as_well/?utm_medium=android_app&utm_source=share

If you face in Avast that the program is infected with IDP.Generic, then go to Avast > Updates > Update Definitions and then reopen the app after restoring it from quarantine. Avast will re-scan it and it will find that the application is clean. (It was a false positive fixed in last definition updates - Thanks to Ondrej; Avast Customer Care Team)
Other Antiviruses (Kaspersky, Malwarebytes) found it clean, don't worry.
Some browsers like Edge will prompt you that the program may harm the computer (The program is not signed so the browser think that the program is from unknown organization and may be harmful). You can download it anyway, don't worry.