How can I change the color of taskbar button backgrounds and the "show desktop" button?

Hello,
You will need to edit those part in Skinstudios.

For Taskbar buttons : refer below : You will need to edit or provide your own button graphic.

For Show desktop icons

Basj,
Stardock Community Assistant.

Wow, I did all the work to edit just to end up with white borders around the buttons.  I was very careful to change nothing but the colors of what was already there.  I didn't resize, didn't save as a different file type.  Nope. Of course it didn't work.  What an absolute nightmare just trying to do a simple thing with this program.

Well something must have gone wrong. The program is simple enough if you know what you're doing. Do note that, Skinstudio is not a graphics program. You will need a good graphics program to edit those graphics files. What program did you use to edit those items?

Thank you,

Basj,
Stardock Community Assistant