Remmina - The GTK+ Remote Desktop Client  v1.4.2
Remmina is a remote desktop client written in GTK+, aiming to be useful for system administrators and travellers, who need to work with lots of remote computers in front of either large monitors or tiny netbooks. Remmina supports multiple network protocols in an integrated and consistent user interface. Currently RDP, VNC, NX, XDMCP and SSH are supported.
Using colour schemes in Remmina SSH protocol plugin

Choosing between the standard colour schemes

You can chose a colour scheme directly in the advanced TAB of your SSH connection profile

Chossing a colour scheme in the Remmina SSH profile

There are 6 predefined colour schemes

Importing a colour scheme

You can import a colour scheme from the general preferences

Importing a color scheme - screenshot

Several colour schemes are available to download on the iTerm2-Color-Schemes repository on GitHub.

As soon as you have found one you like, you must set "Custom colour scheme" in the SSH profile advanced TAB.

Custom Colour Scheme