The right colour can really flatter your leg, giving shape, evening out skin tone and giving you that healthy 'glow'.
There are no hard and fast rules here - how you wear your stockings or tights is a matter of your own personal style and taste, but if you're not sure what to buy then the following might help.
Match stockings or tights to the colour of the clothing they will be work with. An exact colour match isn't necessary, but you could go for darker shades with dark colour, and light with light.
Alternatively, match stockings or tights to the colour of the shoes they will be worn with. Again, dark shoes, dark stockings/tights: light shoes, light stockings/tights.
So what happens if the stockings/tights are going to be worn with a dark clothing and light shoes? Match them to your skin tone. This will obviously mean different shades for different individuals - pink tones don't usually work wll with darker skin tones, and a strong tan shade is never at its best on a pale leg.
Our advice is - if in doubt stick to black or neutral shades and you're unlikely to go wrong. But if you want to make a bold statement then there are plenty of options - go for it!!