Oasis Water Dye 150ml Purple £3.49 Quantity: at £3.49 each Add To Basket 2 in stock. Purple Water Dye from Oasis Features and BenefitsVibrant Funky colours.Coordinate your vase water with your bouquet, your room or the latest trends. Comes in generous 150ml bottles with a screw top lid Highly Concentrated! Water dyes will not change the colour of the flowers. Vase colour should be combined with regular flower food in order to achieve the best results. Water dyes can be mixed to create your own unique colour.