Why do you think companies and businesses use specific colors to make products and brand themselves? The answer to the question is simple. Marketers and business owners use color to create meaning for their products and the company. Typically, you will see companies utilizing the same colors in product design, marketing design, and logo design.
Starbucks has a green logo, and they also make sure to put the same color green on their cups.
To list all the companies that connect logo and products would take far to long. The importance of understand why companies do this can help you sell more products and grow your business.
What does your company stand for? This is a difficult question to solve, but it is an important one to at least try and answer. Do you want to your company and products to represent peace, the earth, environmentalism, or calmness? If so, you should utilize shades of green. Are you creating a fancy/luxurious company? Consider using purple, because this is the color that is most closely associated with royalty and sophistication.
If you are unsure of your options, reach out for professional color masterbatch. Masterbatching is the only way to give plastic unique and long lasting color.