He is taking great care of that garden.

He exerted himself on the project with all his might.

This gem is made of cinnabar.

He is working on his job with dedication.

He is devotedly working on that job.

He is traveling around the world in search of the elixir of life.

The red color in this painting is made with cinnabar.

His painting has beautiful red and blue hues.

His job is a daily monotony routine.

His way of speaking is very monotone.