The BDT GUI

The Best Dark Transparent GUI
This resource pack will change the look of your graphical interface. It will darken and transparent it, creating a fresh and modern look. This resource pack can also add creative labels to some inventory menus. Currently, the labels are only in Russian, but they don't really have any meaning. It's reminiscent of the labels next to Minecraft's name in the game menu, where they're written in yellow. The resource pack itself has three themes:

Dark transparent is the essence of the resource pack. White-dark transparent is the highlighted version of the button. And gray is the theme for certain types of buttons.