You can emulate the ability to enable/disable filters as follows:
Create a new filter with this regex .*(DISABLED FILTERS BELOW)*
This will match everything
Set the background and foreground to the default colors (black text on white background)
Put any filters you want to disable below this filter
This disabling filter will override the ones below it and return the text to the default colors
Your remaining filters above it will then override the disabling filter and work as expected
i.e.
MY_FILTER_1
MY_FILTER_3
*(DISABLED FILTERS BELOW)*
MY_FILTER_2
MY_FILTER_4