Colour can make a big difference to your headshot and is a huge topic in itself. Plain colours are generally your best choice.
Consider bringing colours the you get a lot of compliments in. There’s normally a reason for this.
Anything that matches your eye colour is always a bonus as it will help draw attention to your eyes.
If you are a business owner or a brand ambassador consider wearing a flash of your brand colour. This can be done subtly through an accessory like a tie or belt or through lipstick or eye shadow. For a bolder connection, consider a top or jacket of the same colour.
Subtle flashes tend to work best in our experience and can tie in nicely with your logo when featured on your website.
Rich colours along with gemstone colours (sapphire / ruby / emerald) typically work well on all complexions. Pastels along with patterns are generally best avoided for photography although there are sometimes exceptions.