Why did Penny Mordaunt use the word 'colour' in her campaign video?

So, as I was saying, a live TV debate doesn’t tell you what a politician really thinks. When Britain watched its five would-be prime ministers debate each other live on TV, there weren’t many revelations. Or any revelations, really. We didn’t find out what the five really thought about testy, testing issues.

“The world they inherit will be decided by the character of the person you select. They will colour every aspect of our institutions.” — Penny Mordaunt’s campaign video

And we certainly didn’t find out why Penny Mordaunt, who is placed second on the five-person list of potential prime ministers, used the word “colour” at a strategic point in her campaign video.

Have a look if you can at the following link: