This solution gives you pretty much the same result as the code in this tutorial however you can add your image via the customizer rather than upload it to your child themes images folder.
Code Installation
Add the PHP code to the end of your child themes functions file. Thats it!
You can then upload your image via the customizer using the Custom Header Image setting as seen in the following screenshot :
You can also add a default in your child themes images folder named header.png.
Tested using the Genesis Sample child theme by StudioPress.
Here’s the code for logged in members :
That works smoothly. The only thing is I can not “hit” it with CSS. It should be .site-title a or just .site-title but it doesn’t seem to work. Will keep on trying though. Thank’s.
Solved it.
What was the problem?
No not really a problem. Just that instead of using .site-title and .site-description I had to use h1.site-title and p.site-description.