I was looking at buildings like this and I started thinking about why they used the red/yellow brick patterns.
This building is obviously on a holy ground point with the arched windows and the tower with bell.

This building has the red cross hatch around the huge round window with red brick spokes. Diagonal bars over the entrance area pointing downwards where you walk through.

What I am wondering is, since colours are different frequencies, are the designs meant to focus the waves?

Here is something I read about colours.

Different colours are different wavelengths.

Perhaps the colours around the windows and doors increases the energetic signature of the building walls. It reminds me of this.

Haven't you ever wondered how those rocks got the stripes? Layers of material put down over years with different types of minerals producing the colours.
Accident or design?
I think the second.