Compatibility between various extensions for Magento can be a bit tricky, due to the fact that sometimes Magento owners tend to install multiple Magento extensions that enhance / modify same Magento template. This can cause issues, and in worst cases lead to one extension blocking other from working properly.
As Magento extensions authors, we try our best to make sure our extensions for Magento are compatible with other popular extensions from different vendors, that are also available to Magento website owners, making sure that our extensions can work flawlessly with other extensions installed on the same website.
The Magento Color Swatch and Magic Zoom integration instructions are available on their website, so please feel free to take a look, if you happen to have our Magento Color Swatch and their Magic Zoom extensions installed.
If you have any additional questions, please feel free to contact our support team.