Pattern can actually be more striking than than vivid color. It's the contrasts that catch the eye. I gave Utahraptor a bold pattern because he's an ambush predator, so camouflage is important. It would have helped them to recognize each other at a glance, important in a hierarchical group structure. These colors mirrored the lichen that was growing on the rocks in the location that the sequence was filmed in.
TV is usually at a lower rez that film.
TV is indeed at a lower resolution than film. This is kind of a mixed blessing. It makes the whole process of generating images easier. The cinema screen is huge so the image contains a lot more detail. To render at film resolution requires some serious computer power.