The opposite of "more pastelike" could be "less pastelike" or "more vibrant". When something is pastel, it means it has a soft, muted color, often associated with baby colors like pink, blue, and yellow. So, the opposite of pastel would be a brighter, bolder color that stands out, rather than blending in. Examples of more vibrant colors might include hot pink, electric blue, or neon yellow. Whether you prefer a softer, more pastel palette, or something more vibrant and eye-catching, there are plenty of colors to choose from to bring your vision to life.