Create a lively pop art illustration that depicts a bustling outdoor market scene enveloped in colorful fog. The composition should feature vibrant market stalls filled with exaggerated fruits, vegetables, and flowers, rendered in bold colors like bright red, sunny yellow, and deep green. The fog should swirl around the stalls and shoppers, incorporating pastel hues that blend with the vibrant colors of the market, creating a sense of warmth and community. Use thick black outlines to define the shapes of the stalls and the figures, enhancing the graphic quality of the artwork. This piece should evoke a sense of joy and liveliness, inviting viewers to experience the vibrant atmosphere of a market brought to life by the interplay of color and fog.