Plasma Memory Mini Programm - changing colors depending on memory usage

I use the Plasma Memory Mini Program to control the memory usage.

Unfortunately, I don’t always pay attention to the memory usage, and so it sometimes happens that the usage is nearly 100 percent, the system suddenly freezes, and I have to manually switch off the computer and restart it.

Perhaps it is possible to modify the program so that the color of the circle changes at a certain level of memory usage, and at the end, when things get really critical, it flashes red.

So e.g. from blue to yellow when the memory usage exceeds around 70 percent, red after exceeding around 90 percent usage and flashing red after exceeding around 95 percent. Perhaps with the possibility to personalize colors and when to change.