These Variable Lens Filters Have Stunning Effects Built Right In
Neewer 58mm Full Color Lens Filter Set for Camera Lens, 9 Pieces Color Filter Kit Includes Red Orange Blue Yellow Green Brown Purple Pink and Gray Filters with Carrying Pouch : Amazon.ca:
16x Macro Lens Red Purple Filter For Gopro 11 10 9 8 Original Waterproof Housing | eBay
Neewer 58mm Full Color Lens Filter Set for Camera Lens, 9 Pieces Color Filter Kit Includes Red Orange Blue Yellow Green Brown Purple Pink and Gray Filters with Carrying Pouch : Amazon.ca: