Request: Add Close-Only Mode to Color Picker

[HassanTaleb90]

I’d like to request a new mode for the color picker that includes only a Close button, instead of both Cancel and Save.

Tapping Close should simply dismiss the view without selecting or saving a color.

The selected color should still be accessible via the colorPicker(_:didSelect:) delegate method.

[kirb]

This UX would be confusing - a user will inevitably tap Close and lose the color they spent time picking out!