Function dark 

pub fn dark(_theme: &Theme) -> Style

Creates a dark theme with VSCode-like colors.

This is the default styling function. This theme mimics the default VSCode Dark theme with:

• Very dark background (#0D0D12)
• Light text for contrast
• Slightly lighter gutter (#141419)
• Medium gray line numbers (#808080)
• Subtle scrollbar colors
• Dark bluish current line highlight