three.js object is black before texture loads - can I change this behavior? -

i new three.js. in project can move through series of planes cross section images of object. problem material doesn't load right away , moving , down causes of planes display black. need change behavior. there way either

1. change property plane transparent - image should still opaque when loaded
2. or don't display/render plane @ until texture loaded?

i'm not @ sure on right track, , hoping more experienced can suggest specific fix.

thanks!

not sure if cleared made handy little function take care of modifying opacity setting, basic of are:

function loadtexture( path ){      var mat = new three.meshbasicmaterial({         map: new three.imageutils.loadtexture( path, null, function() {             mat.opacity = 1;         } ),         opacity: 0     });      return mat; }