Custom Cartoonish 2D RPG Game Development

I'm looking for an experienced game developer to create a custom 2D RPG game with a cartoonish art style.

Key Requirements:
- Platforms: iOS, Android, and Windows
- Turn-based combat mechanics
- Customization options for editing looks and dialogue
- Ability to change screen color with item usage

Ideal Skills and Experience:
- Proficiency in 2D game development
- Experience with turn-based combat systems
- Familiarity with mobile game publishing on Apple Store and Android
- Strong background in cartoonish art design

Let's discuss more details, please provide your portfolio and relevant experience.