KWGT doesn’t have enough functionality to get a wallpaper base color, but instead of manually adding each color (base color, accent, light version, dark version) to get Android 12 widgets that match the new look, your Wallpaper base color, I’ll take care of the rest!
Supported Android

{5.0 and UP}
Supported Android version:-
Lollipop (5.0–5.0.2) – Marshmallow (6.0 – 6.0.1) – Nougat (7.0 – 7.1.1) – Oreo (8.0-8.1) – Pie (9.0)

Download Material U Android 12 inspired KWGT 2021.May.28.20 Paid APK for Android

Material_U_-_Android_12_inspired_KWGT_v2021.May.28.20_-_Paid.apk