The Quickstar add-on app, works in conjunction with the Good Lock app for system tweaks in the TouchWiz UI.
How to Transparency Android Panel Without Root
1. Install the Good Lock app
Good Lock and Quickstar apps only work on samsung galaxy Android 8.0 devices, this could be the reason if you haven’t upgraded your android device to android oreo. Open the menu and select Galaxy app, then find the Good lock app in search and install it.

2. Install the Quickstar app
Then open the Good lock application and select “Quickstar” on the main menu. Then you will be directed directly to the Quickstar download page on your Samsung Galaxy Store. Touch install to activate it.

3. Customize panels
Go back to the good lock menu then touch “QuickStar”, after that select “Coloring” as shown below. From there you press the menu next to “Coloring” to activate the feature.

On the “Coloring” menu page you can change the panel theme settings just by touching the recommended theme and then applying it to your smartphone.

If you want to change according to the theme you want, you just have to touch the my coloring option, the coloring palette menu will appear and choose the color of your choice.
“Color 1” will change the color on the menu that you want to change, for example in the image below, the icons that are being used are wifi and sound. So the only color that changes is the icon.

“Color 2” is the same as the selection in “Color 1” except that Color 2 changes icons that are not in use or inactive.

“Color 3” functions to change the background color of the panels. In addition, Quickstar has many settings available to adjust the panels on your Android, including adjusting the transparency of the panels along with toggles such as the blur effect or dim effect.
If you want to change it to full transparency, just move the “Background Transparency” to 100%. After you have adjusted the color settings, touch “Save” to create a custom profile. A notification will appear on the screen for you to apply it right now or apply it later.

That’s the way of Android Panel Transparency without root, if you find this post useful, please share it. thanks
