I'm on a Quebec-Boston cruise in late September ... really looking forward to not having to dress for hot weather. I'll bring clothing to layer, silk turtlenecks, sleeveless tops, a sweater, sweatshirt, l/s shirts, cardigan, windbreaker. Scarves and jewelry for evening. Good to be comfy in all kinds of weather. I find that 'back east', rooms are usually much warmer than here in NoCA, so the layering works well. Bright colors are fine, of course. I pack nothing but beige, black and one bright color.