as cores são mesmo percepções visuais provocadas por feixes de fotões que sensibilizam a retina e que transmitem pelo nervo óptico essa informação? 
e as cores dos materiais serão realmente fruto das frequências que as suas moléculas constituintes reflectem, absorvendo todas as outras frequências do espectro?
e é por isso que numa canção, tão triste quanto bonita, o céu deixa de ser azul e as rosas deixam de ser vermelhas?



Roses are not red
Still life never growing
The sun is not a source of light
And wind will not be blowing
Birds will die up in the sky
The sky that is not blue
Everything is as it was
I never loved you, I never loved you

Roses are not red
The rain is not been falling
Telephones ring unaware
Oh, why we bother calling
No one there, we never care
To you we've been true
Everything is in it's place
I never loved you I never loved you

Face - so unremarkable -
could never live this lonely time
Your voice - all but forgotten -
does not echo every single sound
Your eyes - without expression -
There's nothing special in that case
So why do I spend every night
Dreaming of all the things I'll never miss

No joy as spring arrives
There's nothing sad about you leaving
And I will live my life the same
Maybe this time without breathing
So look through these eyes
That never cry
And any fool could see what's true
Roses are not red
Roses are not red
Roses are not red
And I never loved you