You need to modify the Flash template. This is at
Windows: C:\Program Files\Adobe\Adobe Photoshop Lightroom 4.x\Shared\webengines\default_flash.lrwebengine
Mac: Applications\Adobe\Adobe Photoshop Lightroom [version]\Shared\webengines\default_flash.lrwebengine
Copy that lrwebengine to
Windows: C:\Users[user]\AppData\Roaming\Adobe\LightroomWeb Galleries
Mac: [user]\Library\Application Support\Adobe\LightroomWeb Galleries
Open the file galleryInfo.lrweb in a text editor. Notepad is fine on Windows, or TextEdit on Mac where you may need to right click the lrwebengine and select “Show Package Contents” to get to . . .
AutoSync mode in Library means that metadata changes apply to all the selected images, and is normally enabled by clicking a switch in the right panel (F8). But what if that switch isn’t visible?
It took me a while to figure this out, but the switch is only visible when you are in Loupe view (E) and when multiple items are . . .
It’s because the Flash gallery’s SWF (the Flash file) isn’t colour managed.
Flash does now support colour management. But the SWF would have to be ActionScript3 (the version in Lightroom is AS2)
You also have to consider what the person viewing your site is using. Assuming the visitor isn’t using a Flash-hobbled device like an iPad, that computer would have to be . . .