When it comes to more casual obi, most of the pieces in my collection are fairly seasonal due to their motifs. Even if the motif isn't seasonal, sometimes it's color of the obi that makes its use limited. That is why I am very excited about this new obi I purchased a few days ago.
Its base color of cream is quite neutral and with small, colorful squares, it lends itself to nearly any kimono color. The darker cream threads are not gold, but they do give the impression of gold. This obi would work well with casual outfits, and with the right accessories, it might even pass for semi-formal.
It's currently being tailored, but when it arrives, I have so many things to coordinate with it!