Need Flutter based design schema for my web based dashboard

I have web based dashboard, for which I need UI design proposals written as widgets in flutter. On website you will see I am using 2-3 types of cards. I need design template for these cards. I don’t need layout designs. In short, don’t worry about placement of cards. But just provide your ideas on creating good looking card designs with suitable canvas background color scheme. Deliverables 1. For each of tiles/card type (2-3 of them), I would like to have design template with matching color schemes. 2. Also include background colors, text fonts, etc in your scheme 3. Please provide two design schemes. 4. For each design please provide light/dark themes 5. For each scheme, please provide widget code written in flutter