Every templates are just black and white. Think of it as a wireframe. You customize it yourself. Add background colors, box shadows, gradients, etc. Play around, make it yours.
My idea is designing templates that's looking good even in black and white. I expected that some people don't want, or don't have the time to customize it. In that case, you can just change the brand color (#353535 in this case) to yours, blue for example, and you're ready. I use CSS variables for these templates, so changing colors will be easy.