To create your own system tray like you want it click right on the desktop. Select "DesktopX" from the context menu, and then click "New Object". Right click the new object and select "Properties". A dialog appears. On the top you can select the "Object class" by pressing the arrow to the right of the edit box. Select "System tray". Now press "Configure" below it and set the options presented in the dialog that appears.
After closing that dialog press the "Appearance" icon. The dialog changes and you can press the "Browse" button to select a bitmap. That bitmap should contain an image of your system tray. You have to be a little creative to draw one with your graphics program. It can be a BMP or PNG. After you have selected one press the "Advanced" button. A small dialog appears in which you can specify whether to tile or stretch the image. Also you can specify which portions of the image NOT to tile or stretch. A sample is drawn that shows you the areas meant.
Magenta ((255,0,255) alias the Magic Pink (tm)) can be used in your picture to specify the transparent parts. Those areas will not be draw and you can look right through it.
You can also make the image translucent. If you want that you can press the "Alpha blending" tab. To make it uniform translucent just select the radio button next to "Uniform" and specify a percentage. You can even use per pixel alpha blending.
For an explanation of both techniques see the following link: https://www.stardock.com/products/desktopx/tutorial/tipstricks.htm
This great tutorial starts here: https://www.stardock.com/products/desktopx/tutorial/default.htm
I hope this was the information you needed. If not then these blisters in my fingers broke out for nothing.
I hope Jafo corrects my English.