Thanks
@Designer and
@ORourkeK. I enjoyed seeing your edits and the difference the impression of the image gets by adjusting wb. I prefer the natural / blueish tone for this picture personally, but can see the appeal of the green tones, cannot name it but it creates a slightly weird atmosphere.
I did another edit now using the wb setting (default at camera 5300K) which I intended to use for the photo originally but forgot to set causing this post in the first place... now that I understood raw and the possibilities, I feel how difficult it is to decide how a picture should actually look in means of tones of colors, given also the exposure and composure of which I have not really a grip of until now, that's a hole lot to try out from here on...

OLYMPUS DIGITAL CAMERA by
moriato on ThePhotoForum: Film & Digital Photography Forum
Thank you all again, I am really impressed with this forum!