There is a new application available for Sparkers: Materialgram
What is Materialgram?
Telegram Desktop fork with Material Design and other improvements, which is based on the Telegram API and the MTProto secure protocol. The source code is published under GPLv3 with OpenSSL exception.
It is available to Linux and Windows platforms.
Installation (Sparky 7 & 8 amd64):
sudo apt update
sudo apt install materialgram
License: GNU GPL 3
Web: github.com/kukuruzka165/materialgram