sigh...
orange crush has to have green eyes that don't change colors... if it has some green eyes, it's rainbow echinata... rainbow echinata can have all kinds of colors and will change colors depending on temperature and lighting... rainbow echinata can also turn all blue... i've had mine light blue base with purple eyes... but now it's just burgandy and stuff because i switched to T5's...
also, orange crush has different type of growth... it grows thicker than the rainbow... rainbow usually grows flat like a chalice... orange crush grows up like a normal acan... rainbow echinata is also a lot more aggressive than the orange crush... i know from experience...