Hi!!
I hope I can be of some help, this is the GRANULE filename I found in its folder 
L1C_T34SDG_A011244_20170817T092934
Should be the correct one?
It is a data product from sentinel2A
and this is the screenshot from SNAP
It is obvious that the RGB mode, even without any atmospheric correction is really wierd.
I will look forward to your reply
Regards