Blue themes

Blazer

By: cymq

Butterfly in the Green

By: tuhinchakravorty

Halcyon Porter

By: fireisgood

The Witcher 3 Natures Beauty

By: slipkid69

Midnight Gulfwaters

By: edanhall

Blue Dark

By: ivandfx

Zografou Sunset

By: Elias

Olive Midnight

By: 78910

Morpheus Black

By: morpheusblack

Jam Dark

By: kafkavijit

Minimalist Orange and Teal

By: Jayden

1980s retro future

By: MinoBobo

night time kitty

By: Willbyersfanpage

FALLOUT

By: slipkid69

periwinkle

By: roxwize

Borealis Lights

By: aemux

Machu Picchu

By: mesnitu

Vivaldi Navigator - a Netscape inspired theme

By: Account

Luminous Jelly

By: Aaron

Vivaldi ArcDark Theme

By: vstan

Adventure to the blues

By: Gion Konrad

D4rk

By: Kocaelispor

Green Switch Keys

By: waalves

Chevron Theme - Teal

By: stardepp