The writer also compiled some tips of her own through a list of colours and the mood they convey. Dark blu
e, for example, is seen as grave, intelligent and sated, while red is seen as exciting, dangerous and hungry.
White was viewed as clean and safe, which is possibly why the vast majority of messages use this as a background for their content.
Ms Gagnon went on to provide advice for specific businesses and the colours they could do with using in their own campaigns.
"A café may want to use red. It's reported to increase appetite. If their logo and signs are usually hunter green and navy, they could use a dark maroon to match. If their branding is bright, they should use crimson," she said. "Clothing retailers could use purple to suggest their clothes are uncommon or exclusive, light yellow to put the customer in a carefree 'buying mode' or black to sell business or formal wear."
Childcare centres were advised to use greens, pinks and browns to soothe anxious parents; while financial planning companies were told to go for white, blue, brown and grey to indicate intelligence/safety.