Developer forum

Is it possible to differentiate in available variants in different language layers while sharing the same product base?

For example:

Product X in language layer NL has Blue and Red variants while the same
product X in language layer EN only has Blue variants.

I've a live website dealing with this problem

http://www.wolky.nl/
http://www.wolky.com/

If possible can someone explain me how I can implement this in these websites?