Crochet Pattern for Nook Tablet

Simple Nook tablet cover.  I mainly used double and single crochet.  to create this cover.

The Pattern:
40 chains (10.25 inch)
connect ends together to form circle
Row 2:  rows of single crochet (slip stitch to complete row)
Row 3:  rows of double crochet  (slip stitch to complete row)
Row 4:  switch to new yarn - rows of single crochet - (don't cut the strand of yarn)
Row 5:  switch to white yarn - rows of double crochet