The dresscode of your worklife may not correspond to your personal creativity, your sense of fashion, trends and what suits you.
If leisure time makes up only for only 20% of the time your month has, then you only have 20% to wear what you want, to make a statement.
If you look closer, you can learn from the details, you can use that dresscode not as a restriction but as a guideline along which you can, with inspiration, be fashionnable at work.
More fun and liberty, more personality and attitude.