<｜begin▁of▁sentence｜>### Instruction:
As a research scientist conducting a study on visualizing hierarchical data structures, such as family trees or organizational charts, you may need to represent the nodes of a tree graph with 10 vertices using a color gradient. To achieve this, you would like to retrieve a set of colors from a red to blue gradient palette at specific positions and use these colors to visually distinguish the vertices in the graph.

During this process, you may consider utilizing the `matplotlib` library for Python to draw the graph and apply the color gradient to the vertices. This visual representation can aid in conveying complex hierarchical relationships in a clear and meaningful way.
### Response:
import igraph as ig

g = ig.Graph.Tree(10, 2) # Create a simple tree graph
palette = ig.GradientPalette('red', 'blue', n=10) # Define a gradient palette

colors = palette.get_many([0, 0.5, 1]) # Get colors at positions 0, 0.5, and 1 in the gradient
# Use the colors for drawing
plot = ig.plot(g, vertex_color=colors, bbox=(300, 300), margin=20)
plot.save('gradient_palette_example.png')
<|EOT|>
