I have also noticed that you can theme more elements in normal Tg rn(been using TgX for quite some time lel), I'll add all the necessary fixes to the older themes soon

It has a few things missing rn, but it looks similar enough to my other one.

A few more things fixed

An edit of the one made by @fahadalijaved

Updated for tg 5.0, contact me if you find any errors

Updated for tg 5.2, contact me if you find any errors

Updated for 5.10, it took a long time for me to find why the bottom options while forwarding weren't changing colour whatever I had done(tg wasn't showing the changes till I closed and relaunched it)

P.S. contact me if you find any errors

Apparently the wallpaper got unlinked while trying to save this

Wallpaper here, I've tweaked the colour for voice chat related stuff, but the big main menu doesn't seem to be themable rip.

If you find any issues, contact me