I came across this photo earlier and was wondering how I could do the same?

I already tried adding 00 at the end of the color code as that has worked for ServerInfo, but not here.

Also tried setting the transparency here to 1 with no luck

"Transparency (0 - 1)": 0.98​

You want a lower transparency. It is an alpha channel, think of it like a %.

    "Primary panel color": {
      "Hex color": "#444444",
      "Transparency (0 - 1)": 0.05
    },​

Not sure how I didn't try that, lol.

Worked perfect though, Thank you!