Flavours were first introduced in Nv1.4, and they allow you to change the colour of your ninja. You start with the black flavour and a new flavour is unlocked every time you complete a new column (not necessarily needs to match the true order). There are twelve flavours in total, one for each column of the game (including the default).
Until you pass any column, you have to play with the default black flavour. Unlockable colours are:
- Dark gray (tile colour)
- Light gray (invisible, background colour)