Getting nailed by the fashion police

We were wrapping-up after a long, and at times acrimonious, negotiation when one of the executives working on the other side of the table highlighted to all present that I had been wearing black nail polish. While I don't entirely recall the detail of the comment - suffice to say - it was derogatory. As I was the only woman in the room, I thought to myself, "Why is this relevant - why somehow is my appearance any more noteworthy than anyone else present in the room?" Now I have to admit, I do not normally wear black nail polish in an executive setting. It just so happens the colour in question was NOT black, but Light my Sapphire by Opi. This colour had worked beautifully with an ensemble I had been wearing on the prior weekend (I had forgotten to remove the offending colour once the work week had begun) and I dare say also worked with a very conservative dark grey Loro Piano suit I was wearing at the time. I looked over at this person, bit my tongue, and thought, "Who died and made you the fashion police?" Truly, here was a person for whom the cheap suit was designed, marketed and sold successfully in dusty old shops on George St, Sydney. Frankly, they should hand out fines for people wearing outfits like his - but of course to him (and quite possibly other company present) black (or Light my Sapphire for that matter) nail polish in an executive setting is a crime, punishable by a sentence of at least five minutes of uncomfortable silence and total embarrassment. Afterwards, I wondered whether I should have held fire (or Light My Sapphire for that matter). Ladies what would you have done?