Posted by dxli on
URL: https://forum.librecad.org/How-to-change-the-color-of-an-existed-entity-tp5707348p5707367.html

For a block, you should select the block in the block widget.

Use the button "Edit the active block in a separate window" to edit the block.

Then, you can change the attributes there.

All copies of the block will show the change.