I have a grid of objects like this:

Each object is made of 2 separate meshes (red and blue). Is there a way to use python to delete only the red part and then move the blue part to the front? The red parts' vertices are all Y coordinate 7.5 or bellow so I was wondering if that could be used to select and delete them. The remaining geometry has to be moved -15 along the Y axis afterwards

I can put all the objects in a collection with a specific name or select them manually before hand if that helps make it simpler

I have a grid of objects like this:

Each object is made of 2 separate meshes (red and blue). Is there a way to use python to delete only the red part and then move the blue part to the front? The red parts' vertices are all Y coordinate 7.5 or bellow so I was wondering if that could be used to select and delete them. The remaining geometry has to be moved -15 along the Y axis afterwards

I can put all the objects in a collection with a specific name or select them manually before hand if that helps make it simpler