I presents you my second small mod for factorio.
This mod add 2 to 10 buttons which control game speed.
When we chose speed, this button text color is change to red, others to white.
When we load game this mod detects actual game speed and change specific button text color to red if game speed is different than buttons speed all buttons text color is change to yellow and we get prompt on console.
There is a menu in which you can disable or enable buttons, change it's label and game speed.

https://forums.factorio.com/viewtopic.php?f=92&t=2396

Ps. Thx to kuxynator for inspiration with try/catch and keeping this mod alife.