I thought the upper blue one first.... then, I saw your Overtly Olive paint... and then changed my mind... go with the off white one.
Purely... because a toaster is going to last a long time, and the top blue toaster colour is quite brave... and you might go off it after a while... and at over £50 a toaster (great price though) - I would stick with same colour as your kettle.... and if you want to insert a bright colour into your kitchen.. use thinks like mugs (if they're on show) , teatowels, tea/coffee/sugar cannisters and things like that.
I love the Overtly Olive paint.. I had it in our last house. Bloody love it!!!