better example

canvas/src/autocomplete/gui.rs

@@ -5,7 +5,7 @@
 use ratatui::{
     layout::{Alignment, Rect},
     style::{Modifier, Style},
-    widgets::{Block, Borders, List, ListItem, ListState, Paragraph},
+    widgets::{Block, List, ListItem, ListState, Paragraph},  // Removed Borders
     Frame,
 };
 
@@ -27,7 +27,7 @@ pub fn render_autocomplete_dropdown<T: CanvasTheme, D: DataProvider>(
     editor: &FormEditor<D>,
 ) {
     let ui_state = editor.ui_state();
-    
+
     if !ui_state.is_autocomplete_active() {
         return;
     }
@@ -76,7 +76,7 @@ fn render_suggestions_dropdown<T: CanvasTheme>(
     frame_area: Rect,
     input_rect: Rect,
     theme: &T,
-    suggestions: &[SuggestionItem<String>],
+    suggestions: &[SuggestionItem],  // Fixed: Removed <String> generic parameter
     selected_index: Option<usize>,
 ) {
     let display_texts: Vec<&str> = suggestions

canvas/src/canvas/gui.rs

@@ -11,7 +11,7 @@ use ratatui::{
 };
 
 #[cfg(feature = "gui")]
-use crate::canvas::theme::CanvasTheme;
+use crate::canvas::theme::{CanvasTheme, DefaultCanvasTheme};
 use crate::canvas::modes::HighlightState;
 use crate::data_provider::DataProvider;
 use crate::editor::FormEditor;
@@ -353,3 +353,14 @@ fn set_cursor_position(
     let cursor_y = field_rect.y;
     f.set_cursor_position((cursor_x, cursor_y));
 }
+
+/// Set default theme if custom not specified
+#[cfg(feature = "gui")]
+pub fn render_canvas_default<D: DataProvider>(
+    f: &mut Frame,
+    area: Rect,
+    editor: &FormEditor<D>,
+) -> Option<Rect> {
+    let theme = DefaultCanvasTheme::default();
+    render_canvas(f, area, editor, &theme)
+}

canvas/src/canvas/theme.rs

@@ -15,3 +15,36 @@ pub trait CanvasTheme {
     fn highlight_bg(&self) -> Color;
     fn warning(&self) -> Color;
 }
+
+
+#[cfg(feature = "gui")]
+#[derive(Debug, Clone, Default)]
+pub struct DefaultCanvasTheme;
+
+#[cfg(feature = "gui")]
+impl CanvasTheme for DefaultCanvasTheme {
+    fn bg(&self) -> Color {
+        Color::Black
+    }
+    fn fg(&self) -> Color {
+        Color::White
+    }
+    fn border(&self) -> Color {
+        Color::DarkGray
+    }
+    fn accent(&self) -> Color {
+        Color::Cyan
+    }
+    fn secondary(&self) -> Color {
+        Color::Gray
+    }
+    fn highlight(&self) -> Color {
+        Color::Yellow
+    }
+    fn highlight_bg(&self) -> Color {
+        Color::Blue
+    }
+    fn warning(&self) -> Color {
+        Color::Red
+    }
+}

canvas/src/lib.rs

@@ -25,10 +25,13 @@ pub use canvas::actions::{CanvasAction, ActionResult};
 
 // Theming and GUI
 #[cfg(feature = "gui")]
-pub use canvas::theme::CanvasTheme;
+pub use canvas::theme::{CanvasTheme, DefaultCanvasTheme};
 
 #[cfg(feature = "gui")]
 pub use canvas::gui::render_canvas;
 
+#[cfg(feature = "gui")]
+pub use canvas::gui::render_canvas_default;
+
 #[cfg(all(feature = "gui", feature = "autocomplete"))]
 pub use autocomplete::gui::render_autocomplete_dropdown;