All you have to do is apply a different Feel to the structure. This could Light or Dark, or shades in between.
I also forgot to mention Rhythm.
So you have the:
Pattern - Cmaj7, Dm7, Em7 etc
Rhythm - 1, 2, 3, 4 _ 1, 2, 3, 4 etc
Feel - Light (maj) <-> Dark (min), Shading (7th, 6th, dim5, +5, 11th, 9th, sus4, sus7 etc...)
Word - Do, La, ba, fa, ra, su...
Code:
[ C - D - E - F - G ] + Rhythm
[ Yel-low-sub-ma-rine ] + Feel
The possibilites are ENDLESS. It could go forever if you want it to.
Sorry if it looks confusing. I'm still trying to get my head around it too.