Heard about Plata theme for as linux ui theme? Here are the colored-variants of it.
This repository is building the releases of the original plata-theme with different color variants. Those can be downloaded from the release assets.
The theme get build with the material color palettes.
To install the themes copy the content of the zip archive into /usr/share/themes and the themes will picked up by your system.
For the installation instructions of the extra themes (Telegram,...) take a look at tistas500's Readme.