No. You can't do drop shadows in most dark-mode setups, there isn't enough contrast to make it work.

OS9:

https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2F...

Windows NT:

https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2F...

BEOS:

http://toastytech.com/guis/b5pebaqua.png

Regarding the BeOS screenshot: mind that this is not regular BeOS, but the OS X-like "Baqua" appearance of the eOS 5.1d0 developer release, which never saw a regular release.

(I'm taking no offence, but it may be important to point out what's what, now that image references are becoming as inevitably as increasingly unreliable, as for "AI".)