Remember that this is supposed to be your wardrobe that you're creating, so it may bear no resemblance to mine. Although I have gradually introduced more neutrals into my own wardrobe, I still love bright colours so my accent pieces, not surprisingly, are bright blue and purple. If you're more of a neutral sort of girl, you may prefer adding lighter neutrals to contrast with the dark neutrals and maybe wear a colourful necklace or pair of ear-rings for a slight touch of colour.
With two bottoms and four tops, plus a jacket or cardigan, the capsule would make a good starting point for a weekend away or even a week's holiday, maybe adding a pair of heeled shoes or boots and a dressy top for going out to dinner.
The above capsule wardrobe is looking good for me, however I haven't forgotten those of you who look better in warmer colours.