The link you posted refurbished, lower processor speed, 750gb for£30 more.
There's a red and blue i5 both E5-571 models for £249 and the black one that's lower spec for £279 model E1-572. I'm still missing something since all three are returns that have been manufacturer refurbished or to equivalent standards.
Colour doesn't bother me so long as not pink or purple. Prefer not white but beggars can't be choosers.
Tempted by the E5-571 in blue or red, i5 4th 1tb at £249.