1. Open the Color Fill game on your mobile device.

2. Tap the screen to begin the level.

3. Observe the grid layout, which consists of gray and black squares.

4. Identify the colored shape block at the bottom of the screen. This is the piece you will move.

5. Drag or tap to move the colored block onto the grid.

6. Fit the shape into the gray and black squares to fill them completely.

7. Your goal is to cover all the designated grid spaces using the colored shapes without overlapping or leaving gaps.

8. As you fill spaces, look for diamonds placed on the grid.

9. Make sure your shape covers the tiles with diamonds to collect them.

10. Once all the gray and black squares are filled and all diamonds are collected, the level will be completed.

11. Tap to proceed to the next level and continue the challenge.

12. Use logic and spatial thinking to fit more complex shapes in later stages.

13. If you get stuck, restart the level or reposition the shapes to try a different strategy.

14. Enjoy the relaxing music and colorful visuals while progressing through each level.

15. Continue playing to unlock new challenges and improve your puzzle-solving skills.