Keep the traditional shapes for selection controls

Sticking to familiar UI patterns is crucial when designing selection controls like checkboxes and radio buttons. It's because users come with built-in expectations. For instance, radio buttons are generally round, and checkboxes are square. You could tweak their styles to fit your design theme, but altering their fundamental shapes can lead to user confusion.

The idea isn't to stifle creativity but to maintain a balance between innovation and usability. So, feel free to play with colors, borders, or shadows, but keeping the basic shapes intact will help you provide a user-friendly and intuitive experience.