A non-electrical solution.
Any easy trick is to cover the bright lights with exposed photo film negative or other dark sheet of plastic. Cut the film to the right size to cover the offending light and affix it over the light with DOUBLE SIDED Scotch Magic tape. Does the job, even looks good, easily reversible, and, catch this, you can vary the brightess of the light by using a darker or lighter film or, if you use different colored negatives, you can even change the color of the light! Cheap, easy and does the job.
Any easy trick is to cover the bright lights with exposed photo film negative or other dark sheet of plastic. Cut the film to the right size to cover the offending light and affix it over the light with DOUBLE SIDED Scotch Magic tape. Does the job, even looks good, easily reversible, and, catch this, you can vary the brightess of the light by using a darker or lighter film or, if you use different colored negatives, you can even change the color of the light! Cheap, easy and does the job.