Here are a number of ways of remembering the order of the colours of the rainbow.
I hope to reach a hundred!
RED ORANGE YELLOW GREEN BLUE INDIGO VIOLET
Riding On Your Giraffe Bareback Invites Vertigo
Remnants Of Yesterdays Gorgonzola Become Increasingly Violent
Rain On Your Glasses Blocks interesting Views
Regiments Of Yorkshire Gurkhas(sp?) Bayonet Itinerant Vagrants
Rhino-horn On Your Greens Bestirs Inherent Vices
Running Over Your Grandmothers Bunions Initiates Violence
Reclining On Yielding Goosefeather Beds Incapacitated Victorians
Ripping Off Your Garters Begets Inelegant Veins
Reminiscing Over Yesteryear, Geriatrics Become Increasingly Vague

More to come!