Retail Download Spectrum - IPS 4.x.x 4. September 2016 Version

Spectrum is a color-changing theme. It mimics the color of the sky based on the time of day: during the day, the theme is a strong blue and fades slowly into dark colors as the sun sets. During night hours, the theme will be dark which makes reading pleasant. Spectrum also comes with a background picker, allowing your members to choose from a predefined selection of images which faintly overlay your background gradient.

I buyed a license for this theme so I try to it to always keep up to date