Here the theme qtcurve Larimar. A flat theme.
The zip file contains the file qtcurve and that of color.
Qtcurve and True Colours by me
Leo-like icon theme by Seanbarman
Icons of panel: Token by ~ brsev
Plasma: Nano. Found on kde-look.
Wallpaper: 09 Found on Gaia gaia09 official site and Customise.org