#100daysofcode my third day of improving my js skills

Nice, if you wanna amp it up, then adding a transition to the color changes is a really nice effect, and relatively easy, effect i have seen for these kind of toggles.
(w3schools.com/css/css3_transitions...)

Another way of doing this would be toggling a class with element.classList.
It is a bit more dynamic, and leaves less styling floating in the JS.
(developer.mozilla.org/en-US/docs/W...)

Unless you are into CSS-in-JS but that is a bit more advanced compared to this. :)