Jaunty 'Titfers'

With spring in the air a City gentleman's attention must turn to sartorial matters and I noticed that this London Milliner is promoting some very 'natty' headgear for the new season!

It has to be said that I'm more of a tweed 'bunnet' man myself but if I want to blend in here 'in town' then I suppose I'll need to go with the trends and sport a more colourful 'titfer' (as they call hats around these parts)?

Titfer: A hat. Cockney rhyming slang: 'tit for tat' rhymes with 'hat'.

Now, which colour should I go for?