Optimized output display for Color::None
Increase the constant EMPTY for null character output
Modified failed but reasonable assertions
Modified some display sections, added some practical methods, and adjusted the visibility of some fields.
Revised the visibility of some fields again and added some methods
Added some useful methods, such as get_colors_arrow and Into<Vec<Color>>, to compensate for visibility changes in self.colors.
Can be easily created from Iterator (such as the colors field of a buffer of the same size))
Manually expand EnumVariantEq to reduce dependencies
Fixed a bug where the output color was changed during optimization of the serialization optimizer, and the serialization optimizer has been refactored
fill_capacity changed to use resize
Modified the output optimization section