Here is a short tutorial on how to add blend modes in Hype:
var modes = ["normal","multiply","screen","overlay","darken","lighten","color-dodge","color-burn","hard-light","soft-light","difference","exclusion","hue","saturation","color","luminosity"];
for(var a = 0; a < modes.length; a++){
var mode = modes[a];
var modeClass = "blend_"+mode;
var elem = document.getElementsByClassName(modeClass);
for(var i = 0; i < elem.length; i++){
elem[i].style.mixBlendMode = mode;
elem[i].parentNode.style.mixBlendMode = mode;
}
}