No Dark Inventory Overlay
Removes dark background overlay from inventories and pause menu
No Dark Inventory Overlay
No dark background overlay from inventories and pause menu

--- This resource pack removes dark background overlay from all different types of inventories and pause menu.
Afaik I am the first one who made this without using any mods.
Versions: <FONT COLOR="#3598db">1.17.1</FONT> — <FONT COLOR="#ff39eb">1.21.11+</FONT>
For the versions above 1.20.4 pause menu will not be affected because mojang changed the overlay to a different one, with blur, which you can remove in vanilla video settings.
Works with both <FONT COLOR="#e74c3c">Sodium</FONT> and <FONT COLOR="#2fcc71">Sodium</FONT>.
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--- Note:
You can also customize color and color of the dark background overlay to whatever you want. To do that, open a file called `rendertype_gui.vsh` (if you are on versions 1.17.1 – 1.19.4, open the file `position_color.vsh` instead), go to line 18 and change the value of `vertexColor.a` to whatever you want. 0 is fully transparent (it is set by default), 1 is the opposite, 0.5 is 50% transparent. To change the color of the overlay, delete the whole line 18 and change it to `vertexColor = vec4(0, 0, 0, 0);`, and then change zeros to values you want. The first zero is for red, the second is for blue, the third is for green, and the fourth is for alpha aka transparency. You can pick a color and get corresponding values for it on color.