I must be in the minority

Most clothes for men are fairly conservative, with only the tie adding a splash of individuality. Ok, I exaggerate - there's always the loud shirt & there's some quite nice waistcoats (haven't got one tho').
So, if I forgo my tie, what colourful item of clothing should I adopt instead

Suggestions (and no I'm not going to work in my B'day suit)
Alan