BF: If scalar-color input has len(shape)<4, need to fill that in.
BF: If scalar-color input has len(shape)<4, need to fill that in.

rfdougherty/dipy,JohnGriffiths/dipy,StongeEtienne/dipy,matthieudumont/dipy,FrancoisRheaultUS/dipy,villalonreina/dipy,StongeEtienne/dipy,sinkpoint/dipy,jyeatman/dipy,matthieudumont/dipy,jyeatman/dipy,villalonreina/dipy,nilgoyyou/dipy,FrancoisRheaultUS/dipy,rfdougherty/dipy,oesteban/dipy,nilgoyyou/dipy,JohnGriffiths/dipy,oesteban/dipy,demianw/dipy,demianw/dipy,sinkpoint/dipy