VBA to change font color of range of cells based on text not in another cell

Hi, I have tried to search this site and tweak code to get what I need (very new to using code), but can't find it. I want to change the font in columns N through AN starting on line 16 until basically the end of the sheet (as the user can enter hundreds of lines) to dark grey (leaving the existing fill and borders) only if the value in column M for that line does not equal "Current License" or "Select". Therefore if the line is blank, or Current License or Select are displayed, the current format and font will be displayed. Because the file will contain a massive amount of data, I would like to use code rather than conditional formatting. Thank you for your help!

Hi...thank you for the fast response. I just pasted in the code and it doesn't seem to be working. What could I be doing wrong? What did you have to disable (the macro that turned the cells red if a forumula was changed)? Thanks again for your help, I really appreciate it!

The spreadsheet is a template that will have the formulas copied down to about line 200. Upon selection of the cell in Column M (which is basically the license # (ie not Current License or Select), then I would like the font for cells from N to AP on that row to change to a dark gray color. Because these cells will have a lighter font, the user and the reviewer will know that these cells on that row do not relate to the current license (they were the previous licenses). I hope this helps! Thanks for the question!.