Flutter Material Theme editor

Panache helps you to create beautiful Material themes for your Flutter applications. Customize components colors and shape, and export the generated theme.

Theming a Flutter App: Getting Started

Material Components widgets

FlutterCore.Com (fluttercore) - Profile

Flutter Material Theme editor

flex_color_scheme

Material Design Theme Editor Plugin by Google for Sketch Tutorial

Flutter Material Theme editor - FlutterCore

Material Design

Multi Theme Using Provider in Flutter, by Mohit Joshi