You would need 4 yds for the aqua background, this includes a 4" border.
Also you'd need 4 yds of coloured fabric. If you want 4 colours, then 1 yd of each - and if using 8 colours, then half a yard of each fabric.
This is based on the blocks being a finished size of 6" ( cut the large blocks 6 1/2" and the 9patch blocks are made using 2 1/2" strips.
This should give you a quilt 68 x 92. I haven't worked it out using 9" blocks, but imagine the amount of material would be the same.