Add color picker with custom selector in edit color dialog for canvas-based panels

**Why is this needed**: When using canvas-based panels in Grafana, customizing colors is essential for effective data visualization and user experience. Currently, the edit color dialog does not provide an option to use a color picker with a custom color selector, making it less flexible for users who need specific color choices based on elements or image used in the canvas. **What would you like to be added**: Add the ability to use a color picker that includes a custom color selector in the edit color dialog, particularly for canvas-based panels. This would allow users to select and define custom colors more efficiently and intuitively. **Who is this feature for?** Grafana users and dashboard designers who utilize canvas-based panels and require fine-tuned color customization for their visualizations.