Wiktionary
rainbowlike
a. Resembling a rainbow; displaying a range of colours.
Usage examples of "rainbowlike".
He saw the central, softly rainbowlike dome, towers like lances and towers like webwork, argent nets and ardent globes, the bulks and shapes everywhere around, the little flyers that flitted aglow, and more and more, all half veiled and ashimmer, aripple, apulse, while the life-beat of it went through him to make a bell of his skull, and it was too strange, his eyes did not know how to see it, he gaped as if blinded and shuddered as if pierced.