Create a simple interactive coloring application in English.

Overview
- Display a selection of thumbnails from specific images.
- Allow users to select an image, color it, and save their work.

First Screen
- Show small, easy-to-navigate thumbnails of these images:
  1. URL 1
  2. URL 2
  3. URL 3
  4. URL 4
  5. URL 5
  6. URL 6
  7. URL 7
  8. URL 8
- Ensure thumbnails are clear and identifiable.

Image Interaction
- Upon selecting a thumbnail, download and parse the PNG for coloring capabilities.
- Display image in full-screen vertically.

Top-Left Corner
- Back Button:
  - Display a confirmation dialog before returning to the image selection screen.
  - Message: 'Do you want to return to the image selection?'
- Save Button:
  - Allows users to download the colored image directly.

Top-Right Corner
- Show a large red circle as the default color (bright blue).
- Click to open a fullscreen color palette.

Color Selection
- Display 24 vibrant colors as small circles in a fullscreen palette.
- Select a color and close the palette.

Coloring Interaction
- Detect areas within image boundaries.
- Allow area filling with a selected color upon click/tap.

Palette Function
- Launch in the center of the screen.
- Dismiss automatically after color selection.

Create a simple interactive coloring application:

First screen:
- Display thumbnails of the provided images (take exactly that images):
  1. https://img.freepik.com/free-vector/hand-drawn-zoo-animals-illustration_23-2151199715.jpg
  2. https://img.freepik.com/free-vector/hand-drawn-zoo-animals-illustration_23-2151199718.jpg
  3. https://img.freepik.com/premium-vector/lion-giraffe-hand-drawn_185029-508.jpg
  4. https://img.freepik.com/free-vector/hand-drawn-owl-outline-illustration_23-2149277379.jpg
  5. https://img.freepik.com/free-vector/hand-drawn-fox-outline-illustration_23-2149272718.jpg
  6. https://img.freepik.com/free-vector/hand-drawn-lion-outline-illustration_23-2149285355.jpg
  7. https://img.freepik.com/free-vector/hand-drawn-penguin-outline-illustration_23-2150582038.jpg
  8. https://img.freepik.com/free-vector/animal-doodle-outline-cute-giraffe_1308-81895.jpg

- Thumbnails should be small and easy to navigate.

After selecting an image:
- Download and use the selected PNG to allow drawing on it, parsing contours if needed.
- Display the chosen image full-screen vertically.
- Top-left corner:
  - "Back" button: returns to image selection after confirmation dialog.
  - "Save" button: downloads the colored image.
- Top-right corner:
  - Large red circle indicating the current selected color (default is bright blue).
  - On clicking the circle, display a fullscreen palette with 24 vibrant color options arranged as small circles. After selecting a color, close the palette.

Coloring interaction:
- Detect boundaries of image areas.
- On click/tap within boundaries, fill the area with the selected color.

Q: What specific functionalities should the confirmation dialog include when clicking the 'Back' button?
A: A simple message asking if they want to return to the image selection.

Q: How should the color selection palette be displayed and dismissed?
A: On the center of screen.