As you can see I am now filling that gap with the same pattern that I have elsewhere in the blanket, 2 rows of each colour and shading from white through to purple
The next colour will be pink and then purple. After that I'm thinking of going back the other way, so it goes pink, purple, pink, red, orange etc. I'm not sure what I want to do for the border yet. Mr Soaring Sheep suggested lots of little granny squares but I'm not sure if I fancy dealing with that many ends! Might have a look through my crochet borders book for inspiration instead.
Linking up with Keep Calm Craft On at Frontier Dreams