templateDetails.xml

For now you can add the options yourself if you don't update it anymore in template creator

if these types of options are really needed I could add them in a next version

That would be great!
I currently add a code snippet to each template I create that allows changing of font color, background color, background opacity and borders for each row of modules (not individual modules, just each row of module positions) in the template back end.
Having that ability built in would be perfect for me

for each row of modules

wow, this becomes a big job. Remind me in 2-3 weeks, because for now I know that I don't have the time to look at this, but I hope to have more time then

This is your friendly reminder regarding this addition.
Have you done any work on it yet?

I stopped with the project so for me its not needed anymore..

really ? you stopped joomla! , or template creator ?