Theme for Components

[Aman035]

Currently, the components have only a light theme. A dark theme and user-defined themes would help to enhance the user experience.

[Aman035]

Dark theme has been added for all views #25

[Aman035]

The theme and theme colors are provided using store which can be easily changed for user-defined themes.

[Aman035]

Providing with a color palette for choosing colors can be done for setting user themes

[Aman035]

Support to custom theme colors have been added #38