My employer has a written dress code with which I do not agree. I think it is silly. The dress code specifies that one can not wear articles of clothing made from denim fabric. Not just blue jeans, and not just blue denim. No denim, period. No nicely tailored denim skirts or blazers, no denim jumpers, no denim. Period. I don't like it, but I agreed to it as a condition of my employment. If I showed up in denim once, I would be sent home to change clothes. If I showed up in denim twice, I would be sent home, and would also be "written up." If I showed up in denim a 3rd time, I would be fired. End of story.