Absolutely. That's why I mentioned that it was a casual question. Since everyone presumably has similar hue thresholds regardless of language, I was wondering if language would effect their answer, according to whatever definitions of "color" and "sameness" they themselves use.
In English, if you casually ask the color of the sky or the color you would use for water on a map, most people will simply say "blue" even though they could probably detect hue difference if presented printed samples of the two. Accordingly, I think most English speakers would say Yes if casually asked whether the sky is the same color as water on a map. But is that the same response and reasoning you would get if you asked a speaker of a language that doesn't distinguish between blue and green whether the sky and leaves are the same color?