Another idea would be to use lavender flowers. I am not sure if they are easily available there, but here in Washington State they grow like crazy. They will have a calming scent, and are a purple blue color. Another idea for centerpieces (what I am doing - therefore it is brilliant) is to use potted plants instead of cut flowers. I am going tobe using mini hydrangeas, but you could possibly look at the hardware store's garden center or a nursery and get some to match your color scheme and theme