Choosing colors

[Gunes315]

As a painter I want to choose from an array of different colors in order to express my artistic genius

• [x] with left mouse click on a tile, this color gets changed to the color currently in use
• [x] User Interface with 8 different tiles
• [x] Color of the tiles has to be interchangeable
• [x] Every color has to be possible

[Deltapie-dev]

• [x] Redo with color picker
• [ ] Implement Singleton
• [ ] Catch nil values