Creating a new theme, technically speaking, is very easy, and we will see how to do it in a minute. From an artistic point of view, however, it is more difficult. Choosing which colors work well together, let alone suit your app and the imagery, is much more difficult. Fortunately, we can turn to material design for help.
Material design has guidelines for every aspect of UI design, and all the guidelines are very well documented. Even the sizes for text and padding that we used for the CardView project were all taken from material design guidelines.
Not only does material design make it possible for you to design your very own color schemes, it also provides palettes of ready-made color schemes.
Note
This book is not about design, although it is about implementing design. To get you started, the goal of our designs might be to make our UI unique and to stand out at the exact same time as making it comfortable for, even familiar to, the user.
Themes are constructed...