small tweak to fab button theme background color
small tweak to fab button theme background color

sumn2u/ember-material-design,jhr007/ember-material-design,mize85/ember-material-design,mike1o1/ember-material-design,sumn2u/ember-material-design,mike1o1/ember-material-design,mize85/ember-material-design,jhr007/ember-material-design