What’s up with each cellular tycoon video games having this very same round inexperienced timer?

I've been enjoying a number of tycoon video games, from totally different builders, however for some motive, each single certainly one of them has this very same design, identical shade, identical margins, identical radius/dimension, identical and many others for the length/timer countdown. What's up with this? Is that this a Unity template?

Not saying it appears to be like unhealthy, however the very same design is getting boring to me.