Bob ordered 30 new cartridges for his irrigation system. The cartridges are used inside sprinkler heads and cannot be seen except when being replaced. On the website from which he ordered the cartridges, the cartridges both appeared to be blue and were listed in the description as "Series D430 Blue Rain Bird cartridges for home irrigation." When Bob received and opened his packages of cartridges, they were neon yellow. Otherwise, the cartridges were of the same make, quality, and size and were perfectly usable in his irrigation system. Can Bob reject the cartridges?