This approach only works in daylight with cameras that rely on colour only. Infrared spectrum cameras such as what Australia uses on mobile phone traffic cameras are much harder to deal with. Patterns don't cut it and it's a huge part of military research into hiding vehicles from infrared spotters.
Disabling the cameras entirely is much more effective.
Not that it matters anymore. GN summarised it best stating that we're already long past the point where the extortionate prices matter to even enthusiast consumers who wouldn't buy this shit at 3x MSRP anyway. Even prebuilts are selling empty case 'kits' to keep inventory moving.