Enhance tkinter interface

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added:
+- Tree Render: `render_tree` to accept theme argument.
 
 ## [0.29.2] - 2025-05-15
 ### Added:

README.md

@@ -145,6 +145,8 @@ Examples of extra packages include:
 - `matplotlib`: for plotting trees
 - `pandas`: for pandas methods
 - `polars`: for polars methods
+- `query` for tree query methods
+- `vis`: for pyvis visualisation
 
 For `image` extra dependency, you may need to install more plugins.
 

bigtree/tree/construct/render.py

@@ -76,13 +76,15 @@ def __init__(
         root: tk.Tk,
         title: str = "Tree Render",
         root_name: str = "Root",
+        theme: str = "aqua",
     ):
         """Tree render using Tkinter.
 
         Args:
             root: existing Tkinter object
             title: title of render for window pop-up
             root_name: initial root name of tree
+            theme: theme of Tkinter object
         """
         self.counter = 0
 
@@ -91,6 +93,10 @@ def __init__(
         tree = DragDropTree(root)
         tree.pack(fill=tk.BOTH, expand=True)
 
+        # Set theme
+        s = ttk.Style()
+        s.theme_use(theme)
+
         entry = tk.Entry(root)
         entry.bind("<FocusOut>", lambda e: entry.place_forget())
         entry.bind("<Return>", self.on_return)