^^ Interesting.I always for some reason thought that the slim fit suits were the ones that are worn for the office, interview etc. So anything that isn't black would work.
No black could work too but unless you know the company its better to just stay within accepted stuff, navy, dark grey etc.
as far as slim fitting, sure, but if it is fairly cutting edge type..dont do it unless its a very fashionable type of company, at the same time dont wear something that is kinda out, like a suit with pleated pants would be okay still, but one of those thick shouldr pad 3 pleat a side suits (especially double breasted ones) from the 80's and even 90's really need to be stored away for when they may come back in style or just given away