As a text-based AI, I am unable to create or draw images directly. However, I can guide you on how to use the color palette to create a visual example of the frog monster.

Steps to Create a Frog Monster Illustration Using the Palette:

1. Choose a Drawing Tool: Use software like Adobe Illustrator, Photoshop, Procreate, or any digital painting tool you’re comfortable with.

2. Create the Base Shape:
   • Start by drawing the outline of the frog monster. Use the Outline Dark Green ( #1A3D3D ) for the outline to define the shape.
3. Fill in the Base Color:
   • Use Swamp Green ( #319179 ) to fill in the main body of the frog monster.
4. Add Highlights:
   • Use Swamp Green Light ( #4DBBAA ) to add highlights on the areas of the body that would catch light, such as the tops of limbs and the head.
5. Add Shadows:
   • Apply Swamp Green Dark ( #1E5B4D ) and Swamp Green Shadow ( #1A4D4D ) in the areas where shadows would naturally fall, such as under the chin, between limbs, and beneath the body.
6. Add Details:
   • Use Mud Brown ( #4B3D27 ) and Night Sky Purple ( #4A2C6D ) to create spots or patterns on the body for added texture.
   • Color the eyes with Eye Green ( #A2D600 ) and the lips with Lip Red ( #C74B4D ).
7. Refine and Finalize:
   • Adjust any colors as necessary, and add any final touches like textures or additional highlights.

Example Visualization:

If you would like to visualize the palette, you can create a swatch in your design tool using the hex values provided, or you can sketch the character using colored pencils or markers based on the palette.

If you need guidance on any specific step or wish to explore more details, feel free to ask!