PlasmaK

After installing KDE on my laptop and spending few hours configuring it to my liking, I found that I can't make toolbar in Dolphin as thin as I would like without impacting usability. Currently it looks like this:

While I want it to look like this:

Is there any way to do this? A thinner theme (one that hopefully has GTK counterpart)? Application specific override? Setting that I have overlooked?

I have bought crosscode on sale, and while I like the game so far, the one source of frustration for me is the fact that primary and secondary mouse buttons are overloaded and it can be hard to use their features. Sadly, this game doesn't support rebinding mouse buttons because it was build with snort and matchsticks. Is there a program that can remap mouse keys while the game is running and only while it is running? I know about xbindkeys, it seems like I have to manually turn off my binding when I don't play the game.

Is it possible to implement merging several similarly themed communities into one? I think having redundant c/funny isn't helping.