Suggestion to add theme feature on setting Open tasks.

Components

Open tasks is an app that provided to the user to make their tasks.
OpenTasks, like many of the other entries on this list, is an excellent task management tool for creating individual tasks with a wide variety of settings. It supports a wide range of fields when creating a task, ranging from basic things, such as name and description, to more complex items, such as choosing if the task is private, public, or confidential.

Proposal

My proposal to the developer of this app is to added theme feature that is useful for users to make task in the light or in the dark without hurting user's eyeballs,and I think this feature very useful for users to make more comfortable when they make their task and must be implemented.

Mockups / Examples

This feature must be added on setting of this app.
After theme feature implemented into this app maybe look like this.
The users can set the theme when they make task in the light or in the dark.that's might look like this.

Example I took in another task's app when this feature active.

Benefits

The Benefits of theme feature is:

1.reducing the incoming light radiation in the eye.

2.make users more focused on working.

3.for the health of the user's eyes.

4.to make the feature of this app reach complete.

And to solve the problem,I asked for this feature must be added soon into this app.