Here's what rhymes with metallicblue.
you true blue drew u blew lieu lu rue brew loo pew yew yu ewe ru roux to who do two new through too few view due knew du grew que crew threw coup flew q qu shoe zu clue cue dew glue hue queue shew su sue tu vous chew cu deux flue fu slew zoo bu flu hu ju jus ku mu nu peu piu pu seu shu sou thru vu woo boo chou chu coo cou doo feu fue gu hew mieux shou shrew sprue thu tue tzu vou vue wou wu clew goo imbue mew moo pooh strew poo shoo spew endue gnu indue slue thew whew phew pursue screw withdrew anew canoe renew accrue debut stew taboo untrue adieu ado skew tattoo barbecue beaucoup outdo revue outgrew redo halloo valuer barbeque kazoo bestrew booboo regrew achoo into review interview bamboo undue ensue subdue undo caribou construe jusqu eschew sinew vnto askew ballyhoo fondue foreknew zebu muumuu prevue overdrew wazoo atishoo revenue hitherto overview residue avenue rendezvous retinue overdue overthrew kangaroo shampoo overdo cockatoo hullabaloo bugaboo marabou peekaboo buckaroo overflew overshoe superglue overgrew honeydew misconstrue