I suppose bright in summer and dull in winter. Canberra is one of the coldest places in Australia so has a longer winter than a lot of other parts of the country.Its not gonna help you much but I think metallic red in the sun and Alfa red on a dull day! How bright and sunny is it where you live??
Really good photos Radosuaf!https://picasaweb.google.com/116003001100879799310/Giulietta
This is mine in Rosso Alfa. Pics taken in a quite dark environment (at the dealer and in the evening).
And two more: