How do I remove the red lines that outline my columns and rows? They are helpful for development but they don't look good on the final product.
In the JGoodies Forms (and now JGoodies Layout) you can configure a debug mode where the columns and rows are painted in red.
If you use the FormBuilder just do not call #debug or call #debug with false.
In PanelBuilder and other older builders you can use the FormDebugPanel as background panel. Just do not set an explict FormDebugPanel to make the debug lines disappear.