This is a clock styled on the old BBC test card.for those not familiar see this link. http://www.testcardcircle.org.uk/tchistory.html
Just as I was leaving my friends house she pointed out this clock in her kitchen.
It may appear that her home is a riot of colour and although she is not afraid of colour she has introduced it subtly.
I'm old enough to remember test patterns, but because I had b&w tv only until I was a young adult, I only remember them in b&w. I like all the color your friend surrounds herself with and you've shared with us in your photos.
How unusual, and what a fascinating piece of nostalgia. Thanks for the link, which explained in quite a bit of detail what this is. We had some thing similar in the states.
some examples to look at here , also if you need more help you can do your own googling!
https://expertphotography.com/rhythm-in-photography/