FIX Color of FPS in GUI - Zappy GUI

[Njord201]

Is your feature request related to a problem? Please describe.
There's a problem with the FPS display in the GUI. When the FPS value is below 30, the colour is orange. But the background of the GUI is also orange.

Describe the solution you'd like
Update the colour of the FPS when it is below 30 or update the colour of the graphical interface.