ENH: color scheme + add PCA
COSMIT
address duscssion
address duscssion 2 + expose modern API
ICA vs PCA barrier free + fixed
COSMIT
Improve wording + COSMITS
Improve wording + COSMITS II
manual subplots adjust

manual subplots adjust
Merge pull request #2628 from dengemann/improve_ica_example

ENH: color scheme + add PCA