As you start to wear a kilt more often, you may notice that you become much more focused on the shirts, sweaters, etc. that you purchase. That is, you may purchase colors that you know are going to go well with your kilts. Indeed, as you said, the possibilities are endless. Even with a small number of kilts, you can have many, very nice looking outfits.

Enjoy your kilts/outfits.

Darrell