Ax doesn't always use the same kind of oil. See when the gear is mixed and dissolved in solution it is clear. Totally clear. The oil is what gives it it's color. Cotton seed oil is almost clear where as grape seed oil is more yellow. So you can have 2 of the exact same gear but it's different colored. The quality and effectiveness is the same though. The tops are a mess because BD didn't order any of the newer tops since they new production on the line was going to stop. So Ax just used whatever they had so the vials had tops. So some are green and some are white. I know it's a tad annoying but it was better then using no top at all. Once the new AX line is out things will go much smoother and the labels and toppers and such will be consistant.