Create a vibrant digital illustration that showcases a dramatic burst of colors radiating from the center of the image, creating an energetic and festive atmosphere. Utilize a vibrant color palette featuring bright reds, yellows, and blues, ensuring smooth gradients and bold shapes to enhance the modern graphic style. At the top of the illustration, display the text 'Black Friday' in large, bold letters that command attention, ensuring it stands out against the colorful background. Below, position the text 'Best Deal' in an eye-catching font that complements the overall design, surrounded by illustrated shopping bags and discount tags to enhance the shopping theme. Feature a prominent call-to-action button labeled 'Call Now' at the bottom center of the illustration, designed to resemble a clickable element with a glowing effect, enhancing the urgency of the sale. Employ layering techniques to create depth and movement, allowing the color burst to interact dynamically with the text and shopping motifs. Ensure that the color burst remains the focal point of the illustration, with all text elements clearly legible and harmoniously integrated.