Yep so if i good understand I must have 3 different shortcuts! :)

Something like

Section oncommandstart="var style=moi.geometryDatabase.findStyle( 'Rouge' ); moi.geometryDatabase.activeStyle=style.index;" UseXY=true UseXZ=false UseYZ=false

Section oncommandstart="var style=moi.geometryDatabase.findStyle( 'Vert' ); moi.geometryDatabase.activeStyle=style.index;" UseXZ=true UseYX=false UseYZ=false

Section oncommandstart="var style=moi.geometryDatabase.findStyle( 'Bleu' ); moi.geometryDatabase.activeStyle=style.index;" UseYZ=true UseXY=false UseXZ=false

Yep but that is just successively ! :(
If i add a true there is 2 same colors!