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