Colored asphalt is generally more expensive than plastic. This is primarily due to the manufacturing process, raw material costs, and the specialized applications for colored asphalt. According to a report by the Asphalt Institute, the cost of colored asphalt can be up to 20% higher than traditional asphalt due to the addition of pigments and the need for a more complex production process. In contrast, plastic materials like PVC or HDPE are often more readily available and have a simpler manufacturing process, which can make them more cost-effective.

The cost of colored asphalt is influenced by several factors. Firstly, the pigments used to color the asphalt are not as widely available as the standard black asphalt, which can drive up the cost. Additionally, the process of mixing and applying colored asphalt requires specialized equipment and skilled labor, further increasing the price. For instance, a study by the National Center for Asphalt Technology found that the cost of colored asphalt can range from $30 to $40 per ton, compared to $20 to $30 per ton for standard asphalt.

On the other hand, plastic materials such as PVC or HDPE are often less expensive due to their widespread use and simpler production processes. These plastics are commonly used in construction, plumbing, and other applications, which contributes to their lower cost. According to the American Chemistry Council, the cost of HDPE can range from $0.60 to $1.20 per pound, depending on the market conditions and the specific grade of plastic.

Moreover, the demand and supply dynamics also play a role in determining the cost of these materials. Colored asphalt is often used in niche applications such as playgrounds, walkways, and parking lots, which may limit its availability and drive up the price. In contrast, plastics are widely used in various industries, leading to a more stable supply and potentially lower costs.

In conclusion, colored asphalt is generally more expensive than plastic due to the specialized manufacturing process, the cost of pigments, and the niche applications for which it is used. While plastic materials like PVC or HDPE are more widely available and have simpler production processes, making them more cost-effective.