At a quick glance, deleting all content in this file (including the export) doesn't change the appearance nor does it break anything, and it does appear like the DLS theme being used comes from sci-react-ui rather than anything that is in tomohub's codebase: https://github.com/DiamondLightSource/TomoHub/blob/7f65ca72db6d4e98645d42a8a321bf1a81d6f23b/frontend/src/main.tsx#L12
so I'm inclined to think that this file isn't being used and thus could be removed.
At a quick glance, deleting all content in this file (including the export) doesn't change the appearance nor does it break anything, and it does appear like the DLS theme being used comes from
sci-react-uirather than anything that is in tomohub's codebase: https://github.com/DiamondLightSource/TomoHub/blob/7f65ca72db6d4e98645d42a8a321bf1a81d6f23b/frontend/src/main.tsx#L12so I'm inclined to think that this file isn't being used and thus could be removed.