Ravenclaw colours

[Carol]

Pippin Fowler wrote:
>
> It looks like (from official WB products) movie!Ravenclaw colours
are (dark) blue and grey, while canon!Ravenclaw house colours are blue
and bronze (whatever 'bronze' means as a single colour, I have not 
determined). Do you have knowledge or a guess as to why there is a 
difference? Perhaps they could not reach consensus on fabric/yarn
'bronze' and found grey or 'silver' easier to portray on screen?
> 
> I am confused by 'bronze', because the bronze I have seen ranges from 
> copper (rose/pink-brown) to very dark brown. Yet in my informal 
> survey, people tend to point at brass/gold things when I ask them to 
> point at something that's bronze. <snip>

Carol responds:

As I understand it, bronze is more copper-colored than brass and would
be browner. A person can be "bronzed" by the sun but not "brassed."
:-) I think of the color bronze as a rich, reddish brown (though my
dictionary says yellowish brown, which makes me think of caramel or
butterscotch, not sculptures I've seen made of bronze). The so-called
bronze pipe fittings that you (generic you) sometimes see often look
more like brass to me.

At any rate, I have no idea why the moviemakers went with blue and
gray rather than blue and bronze, especially since that's a little too
close to Slytherin's green and silver to be easily distinguishable.
Maybe bronze yarn is hard to find?

Carol, thinking that a detail of that kind ought to be left as it isn
in the books