Dracula

    javadoc {
        options.stylesheetFile = new File(projectDir, "path/to/your/resource/dracula-javadoc8.css")
        // And some options...
    }

    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-javadoc-plugin</artifactId>
      <configuration>
        <stylesheetfile>path/to/your/resource/dracula-javadoc8.css</stylesheetfile>
        ...
      </configuration>
    </plugin>