OctPoWriMo 2018! Day 27: what colour is it?

I asked you what your favourite colour was
and you said it was me;
that I could be your rainbow
whenever I so pleased.

I photographed myself in emerald
and also in deep blue.

You said to come as I was,
in whatever colour I choose.

In the end, we were Impressionists.

We made a palette true.

You held me in your arms that day
to make a newer hue.