Dark rainbow

Your loving leaves me the colour of a dark rainbow;
Yellows and purples and blacks and red.
The pot of gold at the end of it, though,
Is worth the trials of you in bed.

Your passion leaves me colourful;
Red and black and blue and yellow.
Unaccustomed as I am to this,
You still leave me a happy fellow.

Days pass by but they can still be seen;
Raised welts, red and bruises, blue.
Each wince when I firmly press,
Serves to remind me that I serve you.

With all this said, it doesn't mean
That the colours you leave cannot be hurtful
As long as there's never a trace of spite
Or malice or hate, you can have me purple.