In the interview, Marc Jacobs said that the Fall/ Winter 2007 collection was probably the most personal collection. The change in Marc Jacobs are pretty obvious but his main characteristics are still kept. For example, there are still many garments with special fabric treatment. It enables the colours changing due to light sources and wearers' movements.
It is said that Marc Jacobs is a innovative designer who always gave you something unexpected. On the contrary, this collection was so "safe" and contained less eye-catching designs.
Video from style.com:
2007 SPRING/SUMMER runway-MARC JACOBS