Mid-century modern design often incorporates bold colors and patterns. To achieve a retro vibe in your kitchen, consider using vibrant hues like teal, mustard yellow, or burnt orange for your furniture and decor. You can also incorporate geometric patterns, such as chevron or atomic motifs, through wallpaper, tiles, or textiles. These pops of color and patterns will add a playful and nostalgic touch to your mid-century modern kitchen.