[Feature Request] Custom size of the text on keys

I wanted to install my mother Swiftkey. But the problem is that she doesn’t see the small text on the key, even on the large layout (only the key size changes, but not the text.) I had to install another keyboard with the worst functionality. Please add the ability to increase the size of the text on the keys in the custom theme settings. There is almost no good keyboard for people with poor eyesight.