There are 5 files here
the first one ( KDE sunburst3 ) is a mix of red yellow and blue gradients with a KDE logo at top center

The second (KDE sunburst 4 ) is the same wallpaper with a slightly larger logo image .

The 3rd (KDE sunburst5b) and 4th (KDE sunburst 7 ) wallpapers are a little more festive with white spirals in the center
and small color circles at the bottom of the wallpaper.

The 5th version (kde sunburst8 ) is shown with out the small color circles at the bottom of the wallpaper but a darker red gradient it's less festive but still Cool . .
give them a try , just might keep your spirits up , if you're staying at home more these days....and you know why.

Enjoy