Improve the procedural algorithms

[gdematos]

The procedural algorithms should be improved in order to provide a wider variety of results, so that the outputs are less similar.

• Add new shapes
• Add other ways of filing a Block
• Etc...

[gdematos]

The renderer has been updated in order to be able to generate all possible combinations of color. The previous one could only generate n combinations, whereas the newer one generates n^k possibilities.