If you don't have the results cards the tests will be pretty much worthless. We can try to describe the shades of colors but IMO it will be tough to tell for sure. Only the ammonia and nitrIte tests will be definative (ie if the ammonia test comes out yellow and the nitrIte test comes out light blue can you be sure you have NO detectable levels). You MIGHT be able to tell nitrAte as well (anything orange colored is acceptable, but once it starts to look red I'd do a PWC). Oh and for pH if it starts to look yellow your pH is probably pretty low (below 6.5), or if very dark blue probably close to 8.
But it would still be a good idea to get the result cards for closer determination.