A lot of countries have flags in the colours red, white and blue. The USA, the Netherlands, France, the UK – to name a few.
I looked for inspiration by sorting several of my photographs in specific colours. As a result, I made this article about red, white, and blue in pictures.
Thematic photography is an unending source of inspiration in my view. Try it yourself, if you want. Maybe the theme-spark will catch you as well. 🙂