Try the NL or Pets blur remover from here: http://simpeforum.ambertation.de/si...ur-from-my-Sims. I use the NL one even in the full Sims 2 game including AL+M&G and it works. It also worked for me in Life Stories and Pet Stories. I haven't tried it with Castaway Stories but it should work as well.
As for the skintones, it depends on what you want - Maxis match or realistic. Try our sister site Sexy Sims or InSim Adult. Enayla skintones have nipples on them, as do many others, such as Rensim's skintones. Since this is a PG13 site I cannot provide links to the skintones themselves but the thing to keep in mind is that both custom skintones and default replacements for the regular Sims 2 game will work in Castaway Stories. I played it with Lin's edit of Simcribbling skintones and it worked fine. Default replacement skintones, eyes, eyebrows, etc, for Sims 2 will work with the Stories games.