Sum Snowflake Puzzle

Here's new puzzle with a simple rule set for the holiday today.  Fill in the diamonds with the numbers 1 through 5 so that each number appears exactly six times and no two adjacent diamonds contain the same number.  A white circle between diamonds indicates that the sum of the numbers in those diamonds is five.  A blue circle indicates the sum is six, and a grey circle indicates the sum is seven. 

High quality PDF for printing.
Solution