Native speakers would use a slightly different word order when using also
This product also has two colors.
Both sentences mean the same thing, however I would certainly use the also form. This is a matter of style. I see also as a better choice because:
- trivially, two and too have more or less the same pronunciation, so two orders too sounds odd
- The also comes earlier in the sentence, and so emphasisers the continuity of thought from the previous sentence.
Note however that also and too are not quite interchangeable when used in a slightly different way. In a case where we are talking about our own preferences
I like apples.
Both of the following work:
I also like pears
I like pears too.
and this does not when following I like apples
I too like pears
However when are comparing our preferences with another person's preferences
Peter likes apples
Then too works well, we can use either ordering
I too like apples
I like apples too
though the first one sounds better, we emphasise our similarity with Peter.
and here the use of also is not correct, we can't use also to modify the subject of the sentence: I
I also like apples (wrong in this context)