So I had a request to share my GrayBlue bespin theme so here you go.
Extract the file somewhere and then go into systemsettings then Application Appearance then under widget style make sure bespin is selected (I won't go into how to install bespin).
Click on the Configure button then you should have window that comes up that says presets. Click on the import button and find the files you extracted earlier. then it will show up in the presets list.
When you have the presets showing in the window just click onit to use and click on the load button then click on apply when your back at System Settings.
OS: Arch Linux
DE: KDE with BE::SHELL my Frosted Semi-Transparent Panel
Theme: Bespin my GrayBlue v2
Icons : Leo-like-icons-v8.5 [link]
( I recolored a few in the panel black and it's mixed with bespin-black icons)