Transparent Image just does not work.

[KingCreeperz]

So I am trying to make a custom main menu for my modpack but the transparent just does not work

part of json:

{
"images":
{
"title":
{
"image" : "lightofshadows:logo.png",
"posX" : -150,
"posY" : 60,
"width" : 300,
"height" : 60,
"imageWidth" : 588,
"imageHeight" : 1000,
"alignment" : "top_center"
},

    "buttonbg":
    {
        "image" : "lightofshadows:buttonbg.png",
        "posX" : 15,
        "posY" : -250,
        "width" : 200,
        "height" : 1200,
        "alignment" : "left_center"
    }
},

Reply if you have any ideas or images I could use!

[KingCreeperz]

Image just to give example

[KTibow]

Upload the asset you're using.