(L-R) Holly & Molly.  A rescue centre is struggling to find a home for an unlucky dog who was born with different coloured eyes.  See SWNS story SWEYES.  Molly the collie arrived at the Dogs Trust with her near identical sister Holly.  But while Holly quickly found a new home Molly has struggled with staff believing it is because she has one blue and one brown eye.  The one-year-old dog is happy and healthy and her blue eye is caused by having less pigment in it, a condition known as Heterochromia in humans.  It does not affect her sight and staff at Dogs Trust Newbury are appealing for someone to come forward to adopt the friendly pet.