For the essential oil bottle, hot selling size: 10ml, 15ml, 20ml, 30ml, 50ml, 100ml etc. Original colors: clear color, amber color, green color and blue color. But We can paint all the Pantone color. Popular color like gradient color, rainbow color, translucent colors etc are all available. Metallic dropper bottles, color painting color bottles are very popular in America, Australia and European countries. Essential oil bottles can match with dropper cap, push button dropper cap, fine mist sprayer, pump, screw cap etc. Customized collar color, sample with logo printing before bulk quantity, new mould opening can also be provided.