Perhaps you miss my point....and I did not use the word arouse....but I was talking about the colour and its erotic context....but...this is not an argument....I use sexy in a loose way.... I am no financier but remain a socialist....but politics is messy not sexy!
The first people I was aware of describing inanimate objects, or concepts, as sexy were financiers and politicians. Enough said.
If you genuinely think that a bike frame can be sexy - i.e. it arouses you - then you're weird. That said, each to their own...