Color scheme: DecayCE, some of the themes are available in their repo, and some (like the plasma color scheme) were ported by me. (ported technically isn't right, i just typed in some hex codes lmao)
for firefox? cascade css theme + tab center reborn extension does that, check out the cascade repo i linked, there's detailed info on how to configure it
I switched to vertical bars and have never gone back. I like my toolbar on verticle right side and then i have firefox configured with tree tabs on verticle left
yeah the default panels are.... lackluster to say the least, at least once you figure out how to use latte. Sad that its not being developed anymore. Hopefully someone forks latte soon, some bug fixes and features would be awesome. But honestly, so far, its not bad, haven't run into major bugs with plasma updates, so its still viable for use.