Create a module suite with it's own splash screen. Close the suite customizer.
Edit the image in an image editor and save it under the same name. Browse for
it again and select it in the customizer. You see a version of the image from
before the edits (even changing to another image and back doesn't help).
Probably turn off caching on ImageIO before loading the splash screen image,
and then use ImageIO.read() to fetch the image, not Utilities.loadImage(), so
the previously read image is not cached and reused.
Not into 7.0 or next release. Feel free to reopen if more important than it seems.
NetBeans.org Migration: changing resolution from LATER to WONTFIX
Probably obsolete after rewrite of branding customization UI.
Integrated into 'main-golden', will be available in build *201008040001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
User: Antonin Nebuzelsky <firstname.lastname@example.org>
Log: #73847: Image caching masks edits to splash screen