Hello,
Sorry to say but we have confirmed from the Test Site, the Text Swatch is displaying fine on the Product Image: https://ibb.co/G554DY1
On your Site, can you please once make sure your WoodMart theme and Core plugin is updated to the latest version and then check back the issue again on your Site. The latest version of the Theme running is 7.0.3 and the Core version running is 1.0.35.
If the issue still persists after updating the Theme and Core plugin, then please once try deactivating all the third party Plugins on your Site. If the issue gets resolved, then reactivate them one by one to see which Plugin is causing the issue.
Best Regards