In a nutshell, this means limiting yourself to three or four colours (unless the brief calls for more). Having too many clashing colours can turn off the viewer, which is where colour theory comes in.
It’s an understanding of how grouping certain colours together can help to create a mood or propel a narrative. Fashion directors and set designers rely on it a lot, and it can also be used to great effect in product photography.
As you start to venture into this field, read up on analogous and complementary colour combinations and how to use them to give your work a contrasting or harmonious feel. Then, choose props, backgrounds and even colour lighting gels to match the mood you’re trying to achieve.
To make sure you’re capturing accurate colours, adjust the White Balance setting using the Custom option on your camera. Otherwise, you can shoot in RAW and colour-correct during post-production.