It's a PG-13 borderline R-rated due to bad language and heavily implied sex scenes and later fighting violence.
B5/Kara are married and expecting a baby. Harbinger pays B5 a visit to warn and prepare him for the dangers ahead for their unborn child. Power that will rip apart time and space again and again to prevent her from being born. Please R&R Let know what works and what doesn't. Thank you.
Here is the link to the 2nd Chapter of Pink, White, Green and Elemental.
http://www.fanfiction.net/s/5474668/2/Whats_Pink_White_Green_and_Elemental