Topical Studies for Revelation 9:17:
Blue {Nave's Topical Bible}
Fire {Forerunner Commentary}
Fire {Nave's Topical Bible}
Fire {Torrey's Topical Textbook}
Red {Nave's Topical Bible}
Sapphire {Nave's Topical Bible}
Smoke {Nave's Topical Bible}
Vision {Forerunner Commentary}
Vision {Nave's Topical Bible}