How to spell "colour" - any tips?

[Ihatespiders]

My class try hard, but I usually get coulor or coulour. I've been trying to find a mnemonic, but Googling is just getting me the colour order of electrical components or rainbows!

All suggestions very welcome.

Castles of light open up rainbows?

Erm...how about something like, 'Is colour for YOU? Then add the U!' Too cheesy?

Oh hang on - that won't work with the examples you've given.

Is colour for YOU? Then use L.O.U!

Our favourite col OUR s

Wow! Thank you so much for the ideas.

I wish that "Our colOURs" would work, but getting them to write 'our' instead of 'are' is a separate battle!

I think that I'll hybridise the suggestions ...
Colours
Of
Light
Open
Up
Rainbows