verilog-highlight-p1800-keywords

verilog-highlight-p1800-keywords is a variable defined in `verilog-mode.el'.
Its value is

nil

• This variable is safe as a file local variable if its value
  satisfies the predicate `verilog-booleanp'.

Documentation:
Non-nil means highlight words newly reserved by IEEE-1800.
These will appear in `verilog-font-lock-p1800-face' in order to gently
suggest changing where these words are used as variables to something else.
A nil value means highlight these words as appropriate for the SystemVerilog
IEEE-1800 standard. Note that changing this will require restarting Emacs
to see the effect as font color choices are cached by Emacs.

You can customize this variable.