My initial reaction was the same as that of smart1979, it’s really too much and you would call attention to yourself,
However there are small bow ties and BIG OVERDONE BOW TIES and a small one that was not half the size of your face and was in a solid black or dotted with small dots, what we used to call “dotted swiss” back when I was in the rag trade, might meet the standards of decorum.
And yes, funerals are about celebrating life, but they are also about the survivors who at that very moment are going through the most difficult situation anyone has to face during a lifetime. Even if the deceased was 98 and frail and not “there” anymore, it is still a time of grief and sadness and you are there both to pay your respects to the deceased but also to support and comfort the living.
My father died in November at the age of 85. He led a full life, no regrets. The service was pretty upbeat, the Rabbi was a riot, it was the first Jewish funeral that I know of that had a eulogy given by a Lutheran minister, a friend of my father’s and it wasn’t all weepy with screaming mourners. But it was still sad, it’s not a fun time and going to a funeral is about the last thing anyone wants to do, in my opinion.
So you wear black, you wear something conservative because it is not a cocktail party and you pay your respects and you leave when it is over.
SRM