Grey or white adhesive with grey limestone?

[Qwerty]

I've never had it CJ, but often worry about it happening. I may perform some tests if I can get a hold of some of my friends offcuts

 

[High Peak Tiling]

Just wondering if anyone has ever done a comparison to see if it dose make that much difference. ..

I have done a job where I ran out of white addy and used grey on light limestone, the few with grey were buttered like the rest and haven't shadowed or shown any difference.

 

[High Peak Tiling]

Just a question,has anybody ever had bleed thru,I always stick to lighter tiles white addy,darker tiles grey addy,but many moons ago when I did my first light limestone floor the customer supplied the adhesive which was grey and not knowing then about any info on the problems of bleed thru we laid the floor, went back ten years later and it still look ok and this was all supplied with the kitchen from Harrods.

Your joints must have been pretty clean, as you know it will shadow/patchy the grout and tiles