Any FileMaker solution is a growing collection of stuff to be maintained. By the nature of development, some things will be replaced leaving some aspects to be abandoned and others to be lifted up by revitalizing them. Regardless of what goes and what stays, it's best to have a plan for how things will be added and how easy it will be for your future self, or anyone else, to be able to identify those things.
In this video, I walk through the Home Project database I'm working on and I talk about adding styles to it and how it will impact my use of the theme down the road. This video provides great insight into how themes work underneath the surface and showcase a variety of good habits to have when adding styles to your FileMaker theme.
Click the title or link to this article to view the video.