A mosquito trapped in a colour wheel

Last year, during summer, I remember that I was sitting on the sofa, in the living room, reading a book about colours. It was a very hot evening, windows were wide open. A dauntless mosquito got into the room, and sought to have a taste of my sweet scarlet blood. I was quite defenceless against my foe. As a last resort, my book came to be used as a shield. When the mosquito drew closer to me, I merely closed the book. It got squashed, and the colour wheel captured it.

Now, a portrait of the vanquished mosquito is to be found on my desktop, as a hunting trophy.