I just reorganized my Stampin' Up! cardstock this weekend to group by the new color families. I kept all the discontinued colors in their families too. I use the clear craft envelopes for storage because I can then keep up with the scraps easier. One change was adding some of the tone-on-tone DSP to the envelopes by color rather than keeping it all in collections. This was only for packs that had been used quite a bit.
Here is my blog post with the details and photos:
Lisa E Design Blog: TIPsy Tuesday - Cardstock Organization
Feedback is appreciated as I'm always looking for better and easier ways to store stuff. Thanks.