How do you make artificial boxwoods dark green?

Best Artificial Boxwood Panels Topiary, that have dark green color and you want to their dark color vibrancy, you can try the following methods:

Cleaning: 

cleaning enhances the color, start by cleaning the artificial boxwoods. 

Dust can dull their appearance. Use a soft brush or a leaf blower to remove loose dirt and grime.

( How to clean artificial plants)

Water and Mild Soap: 

Mix a solution of mild dish soap and water. Dampen a soft cloth with the soapy water, wipe the leaves of the artificial boxwoods.

 

This can help remove surface dirt and stains that may be affecting the color.

UV Protectant Spray: 

Artificial boxwoods are often exposed to sunlight, which can cause color fading over time. To prevent further fading, consider using a UV protectant spray. 

These sprays are designed to artificial foliage from UV rays and help maintain the dark green color.

Fabric Dye or Paint:

If the artificial boxwoods are significantly faded, you can consider using a fabric dye designed for synthetic materials. 

Choose a dye or paint in a dark green shade that matches your desired color. Before applying, test a small, inconspicuous area to ensure it doesn't cause damage. 

Manufacturer's instructions and apply it to the foliage using a sponge, brush, or spray bottle. Allow it to dry completely before reassembling the boxwoods.

Artificial Plant Refresh Spray: 

Some specialty products are formulated to revive the color of artificial plants. Look for an artificial plant refresh spray designed to enhance the appearance of synthetic foliage. 

Follow the product's instructions for application.

Additionally, keep in mind that the results may not be permanent, and you may need to refresh the color to maintain the desired dark green appearance.