Just to make this issue clear for everybody: this kind of LUME that has that yellowish vintage look is made by mixing the actual luminescent 'white powder' (can glow yellow, orange, green or blue when exposed to the light) with an okra (sand) colored pigment that does not react at all to the light, and this may be problem if your LUME element is not that pure/strong (very costly) as it will produce a weaker glow and it also prevent a full charge by the light source reducing its lasting effect.
Besides, there is no way to predict how the mixture of these two elements will look when the transparent medium will dry, and this medium will also dry quite quickly so you have to prepare the lume in very small batches to apply it.
Naturally the originals' factories in their labs would have been going through a precise and long process of testing and measuring the exact proportions to get consistent results, disregarding the waste of time and costly materials to reach it.
That's not to justify a blatant error made by the replicas' factories, but I can accept it even if it may happen: I sure need to see it with my naked eye and not in any photo. If I will be so much upset by it I may even consider to add a small transparent wash with yellowish ink on the lume, or eventually redo the lume myself...