Here’s the complete expanded palette that includes highlight colors for each of the existing hues, enhancing the versatility and depth of your designs:

 <Expanded Complementary Colors for Deep Red with Orange, Tongue Color, Outline Color, and Highlights>
1. Deep Red - 
                            
                            #771102
                         - A bold and dark red that serves as the base color.
2. Deep Red Highlight - 
                            
                            #A64A3D
                         - A lighter shade to add highlights and dimension to the deep red.
3. Bright Orange - 
                            
                            #FFA500
                         - A vibrant orange that complements the deep red with a warm and energetic contrast.
4. Bright Orange Highlight - 
                            
                            #FFB733
                         - A lighter orange for highlights that brightens the vibrant orange.
5. Soft Cream - 
                            
                            #F5E0C3
                         - A warm, light cream color that softens the palette and adds brightness.
6. Soft Cream Highlight - 
                            
                            #FFF4E2
                         - A very light cream for gentle highlights, enhancing the softness.
7. Olive Green - 
                            
                            #4A5A2A
                         - A muted olive green that adds an earthy balance to the warmth of the reds and oranges.
8. Olive Green Highlight - 
                            
                            #A8B86B
                         - A lighter olive shade for highlights to add dimension.
9. Charcoal Gray - 
                            
                            #3B3B3B
                         - A dark charcoal gray that provides depth and contrast against the brighter hues.
10. Charcoal Gray Highlight - 
                            
                            #6D6D6D
                         - A lighter gray that can be used for subtle highlights.
11. Dusty Blue - 
                            
                            #4B6F8D
                         - A soft, muted blue that offers a cool contrast to the warm tones in the palette.
12. Dusty Blue Highlight - 
                            
                            #A6B3C0
                         - A lighter blue for highlights that adds brightness and dimension.
13. Warm Gold - 
                            
                            #D4A522
                         - A rich gold that enhances the luxurious feel of the palette and works well with both red and orange.
14. Warm Gold Highlight - 
                            
                            #E6C55D
                         - A brighter gold for highlighting areas that catch light.
15. Coral Pink - 
                            
                            #FF6F61
                         - A warm coral that bridges the red and orange tones, adding a playful touch.
16. Coral Pink Highlight - 
                            
                            #FF9B8E
                         - A lighter coral for highlights that adds softness.
17. Teal - 
                            
                            #008080
                         - A deep teal that adds a refreshing contrast and balances the warmth of the palette.
18. Teal Highlight - 
                            
                            #4FBFBF
                         - A lighter teal for highlights that brightens the deep teal.
19. Light Gray - 
                            
                            #D3D3D3
                         - A soft gray that can be used as a neutral backdrop to let the bolder colors stand out.
20. Light Gray Highlight - 
                            
                            #EAEAEA
                         - A very light gray for highlights that maintains neutrality.
21. Lavender - 
                            
                            #E6E6FA
                         - A pale lavender that introduces a soft, calming element to the palette.
22. Lavender Highlight - 
                            
                            #F2F2FF
                         - A lighter lavender for gentle highlights.
23. Rust - 
                            
                            #B7410E
                         - A rich, earthy tone that complements the deep red and adds a rustic feel.
24. Rust Highlight - 
                            
                            #D76C2C
                         - A lighter rust for highlights that adds warmth.
25. Tongue Pink - 
                            
                            #D85E8B
                         - A bright, playful pink that adds a fun and slightly slimy look to the frog monster's tongue.
26. Tongue Pink Highlight - 
                            
                            #EB8FA6
                         - A lighter shade for highlights on the tongue.
27. Outline Black - 
                            
                            #1C1C1C
                         - A deep black that provides a strong, bold outline that complements all hues while enhancing the overall design.
28. Burnt Sienna - 
                            
                            #E86A4E
                         - A warm, earthy orange-brown that adds depth and richness to the palette.
29. Burnt Sienna Highlight - 
                            
                            #F2B7A0
                         - A lighter burnt sienna for highlights that enhances warmth.
30. Mint Green - 
                            
                            #98FF98
                         - A soft, pastel green that provides a refreshing contrast against the warm colors.
31. Mint Green Highlight - 
                            
                            #B2FFB2
                         - A lighter mint green for highlights.
32. Indigo - 
                            
                            #4B0082
                         - A deep, vibrant indigo that introduces a striking contrast to the palette.
33. Indigo Highlight - 
                            
                            #6E3B9A
                         - A lighter indigo for highlights that adds dimension.
34. Peach - 
                            
                            #FFDAB9
                         - A soft peach that adds a gentle warmth and balances the stronger hues.
35. Peach Highlight - 
                            
                            #FFE6D4
                         - A lighter peach for highlights.
36. Slate Blue - 
                            
                            #6A8EAE
                         - A muted slate blue that offers calmness and sophistication to the overall palette.
37. Slate Blue Highlight - 
                            
                            #A4C8E1
                         - A lighter slate blue for highlights.
38. Light Coral - 
                            
                            #F08080
                         - A lighter variant of coral that can be used for accents or highlights throughout the design.
39. Light Coral Highlight - 
                            
                            #F5A6A6
                         - A brighter coral accent for highlights.
40. Goldenrod - 
                            
                            #DAA520
                         - A bright, warm yellow that adds vibrancy and energy to the palette, harmonizing well with the reds and oranges.
41. Goldenrod Highlight - 
                            
                            #F5C24E
                         - A lighter goldenrod for highlights.
42. Forest Green - 
                            
                            #228B22
                         - A rich, deep green that provides a grounded contrast and complements the earthy tones.
43. Forest Green Highlight - 
                            
                            #4D9B4D
                         - A lighter forest green for highlights.
44. Sky Blue - 
                            
                            #87CEEB
                         - A light, cheerful blue that adds a fresh and airy feel to the palette.
45. Sky Blue Highlight - 
                            
                            #B3E0F7
                         - A lighter sky blue for highlights.

Description of Highlight Colors:

• Each highlight color is designed to be lighter than its corresponding base color, providing depth and dimension. These highlights can be used to simulate light reflection, create gradients, and enhance the three-dimensional quality of your designs.

With this comprehensive palette, you have a variety of colors and highlights to work with, allowing for rich, dynamic, and visually engaging designs.

Would you like to explore how to apply this palette in specific projects or any other elements you’d like to add or modify?