Bordered Block Baby Blanket

This is another project my sister requested.  A little miscommunicated from the get-go, but we're on a quest to make a tri-colored baby blanket for her high school friend.  The main color is a dark blue, with sea green squares in each corner.  Then to tie it all together is a light blue border pulling the squares together and framing the inner main color.  The goal is a 36x36.
Yarn Used: Sirdar Snuggly's Baby Bamboo (80% bamboo/20% wool - machine washable)
Needle Size: US Size 5
Gauge: 25 stitches/4 inches

Main color = MC
Border color = BC
Square color = SC

Cast on 50 stitches in SC.  Continue casting on 125 stitches in BC.  Cast on another 50 stitches in SC. (225)
Slip first stitch, and knit across in same color, twisting yarn at color changes to keep piece unified.  Continue for 24 rows.
Row 25 - Continue in pattern until BC.  Change all BC stitches to MC.   Last 50 stitches are still knit in SC.
Continue for 24 rows.
Row 50 - Slip first stitch.  Change to BC and knit 24 stitches.  Change to MC and knit to remaining 25 stitches.  Last 25 stitches knit in BC.
Repeat until ready for square repeats.
Slip first stitch, knit 24 stitches in SC. Knit in MC for 125 stitches.  Knit last 50 stitches in SC.
Repeat for 24 rows.
Last 25 rows - Slip first stitch, knit 24 in BC.  Knit in BC for 125 stitches.  Knit last 50 stitches in SC.  Repeat for 24 rows.
Cast off using preferred method.

(Note: The above pattern is the intent, but because of the miscommunication, there wasn't enough border color bought so photos will show a more narrow border)