Here I want to present you the project I loved to work on the last months: isometricks.
Please have a look, and play with it! Incoming features: - color selector for each 'face' - eraser
And a handful of others improvements that I have in mind.
Please comment, I would really appreciate any feedback.
Open source and open to collaboration on GitHub: https://github.com/NicolasLetellier/isometricks
Thanks!