Recently Colour packs have been changed so that they have respective colour ID. This way they would show up on the same page as other colour items when viewing items by colour, but at the same time it meant that they would also count towards the full colour achievement. In addition, some of the .obj items that use colour IDs also count towards the full colour achievements, as well as S7ing's 2013 Aikido tournament prize (full demon with a custom name). So you're most likely not getting most of the achievements, and you're definitely not getting a full demon achievement.