I absolutely love colour in my bags! So much fun! Off the top of my head, I own quite a few blue bags (it's my favourite colour and each bag is a different shade of blue), a couple of green bags (one metallic and one forest green), one multi-coloured bag, a yellow one, and a couple of burgundy bags. The only colours I don't have are any shade of tan or brown (I'm just not a brown person).
I also have a few black bags, of course, and 1 white and 1 off-white as well. I really want a quilted bright white bag for my collection but am holding out for the perfect one.
I don't fuss about what to match the bags with; when my outfit is monochrome, I add a pop of colour with the bag. When my outfit is colourful, I opt for a black or white bag.