What about dress colours? 
Well, we all have heard that white represents, ahem, purity. But does that matter these days? What about beyond white and ivory? What is the difference between all of these colours that are, essentially, shades of white?
WARNING: HISTORY LESSON ALERT!
Way back when, wedding gowns actually were all kinds of different colours, because women simply wore their very best dress to get married in, rather than purchasing an entirely new dress for their wedding day. It wasn't until Queen Victoria wore a white dress that white became the popular colour. Initially, this was predominantly the case only because white was associated with royalty, and thus, social status. It only became associated with purity later on.
This is important because it shows that if one is being truly traditional, one should choose whatever dress colour suits the most!
END HISTORY LESSON WARNING
The most common two colours are white and ivory. However, every designer has variations on those colours that are particular to the designer. Above all, you'll want to see a swatch from your dress designer before making a decision.
Another common colour is diamond white - sort of a warm white, or silk white. Other terms you'll hear are pearl, oyster, gold, cafe, etc. All are shades of white and ivory, some darker, some lighter.
Currently, it is also very popular to incorporate other colours into your wedding dress. Some brides are even wearing red, pink or other coloured dresses.
Coloured sashes are a great way to work in a bit of colour if you'd like something a little funkier than the conventional white wedding gown but aren't ready to make the leap to a full-colour gown.
I suggest throwing out the old ideas and choosing the colour that best represents you!