This isn't a "problem" really, in the sense of something being broken - but this section probably qualifies as the most likely to get a qualified answer.
I've noticed (and surprised that no one else has!) the slideshows generated by ZF output images which are WAY off in color compared to how they are viewed in a normal gallery. They are almost always way over saturated. Nah - pretty much always.
This issue is not ZF centric however - I have observed the exact same thing in other Flash based slideshow generators - usually to the befuddlement of their "tech support" people when the issue is raised.
I've already resigned myself to the fact that there is no likely magic bullet to fix this - and I certainly cannot do special post production versions of all my images to please slideshow generators. However, I AM wondering if there is someone out there who will acknowledge the issue and maybe explain why this happens?
Best guess - Some kind of limitation in super compacted Flash routines for web, and possible compression algorithms it imposes in order to pull off the "magic". It would just be nice to hear "yes, we know" and why.
For those that don't think this exists, please compare a normal gallery image from here -
http://www.karenengel.com/p541291614/h31415094#h31415094
To a ZF generated slideshow image from here -
http://www.karenengelphotography.com/connections/slideshow7.html