Stash-eating granny square crochet blanket

I've had this project stashed away in a closet for some time, but decided over the weekend to get started on my granny square blanket. It will hopefully use up tons of wee leftover balls of yarn, and turn them into something useful and charming.
Here's a detail of my squares, I've pinned them in place to see how the finished blanket will look.

The original inspiration came for a vintage granny square blanket I saw in flea market style by Chalmers & Hanan. It had a white border which was my favourite part, as it offset the cheerful collection of colours in the squares. I looked carefully though and it's not just a mish-mash of colours.
So I chose mainly blues and greens, with some random bits of red, orange, pink and grey. I bought a little blue planter at the Sunday Market, and I'm already using it to store the yarn I'm using right now for the blanket.
But the truth is, as with so many of my crafts projects, it's sort of taken over the room, with more yarn in the drawers of the box I just painted, and more on the dining table. Including the elegant new glass and mercury glass vase I bought recently, which is now crammed with yarn. Oh well! I like having the cheerful colours around.