Most people still wear black or dark colours as a mark of respect, but it does depend upon the wishes of the family who sometimes request that the attendees wear bright colours. If you haven't heard anything, I suggest you wear black or something dark.
Most people stick to dark colours. Older people will always wear black. I'm going to one today and my suit is dark grey. Sometimes the family ask for bright colours but usually ask in advance.
I totally agree with Mooria. As long as you are dressed respectfully, black is not necessary at all these days. I am an older person I Love Snow and I certainly don't wear black.
When my mum died last year, I wore a black skirt & a cream blouse. Some there wore grey or navy . No many were in all black though. It`s quite acceptable for women to wear trousers nowadays to funerals.
I think as others have said it is not so important these days but you would normally find immediate family in black. The important thing to the family is that you are going to support them. I was at one recently and some of the guys had come out of their work just to show face so they were in 'dirty worky gear' but the family was happy to have then there.
I wore a black and white flowery dress to my father's funeral because he liked me in it. I would have worn it even if it had been red and white. Recently, a friend wore a coloured shirt to his mother's funeral because she had bought it for him. I think funeral etiquette is much more relaxed these days and, as others have said, just being there is what matters.