Did you know that not everyone sees colour in the same way? Now there's more help for those children who see colours in a different way from others.
It's known as colour blindness. Though it's not a big problem, teachers say it's good for kids to know if they're colour blind, so they don't get frustrated at school.
Kids who have colour blindness inherit it from their mum and dad in a similar way that they get the colour of their eyes and shape of their nose.
The charity Colour Blind Awareness has made a video that it hopes will help children understand it better.
And they say there are simple changes that can be made to help too, like clearly labelling crayons and felt tips and keeping red pens away from green ones.
Watch Jenny's report to find out more...