When my husband decided to make a career change and set up his own heating engineer business, I was excited as I was the obvious (and free!) choice to do his new identity.
The new identity had to be big and bold so it could be easily identified from a letterhead to the side of a van. I decided the most important word was heating and that heat in particular should be emphasised, so picked that out in the orange.
For more information and images please look at the case study PDF: south bucks heating engineers