I have downloaded cairo-clock and I like it very much. But the problem is that it requires xcompmgr enabled to run.
So every time I have to manually enable xcompmgr and then run cairo-clock

I tried to add xcompmgr and cairo-clock to autostart.sh in ~.config/openbox/ directory, but every time I login, xcompmgr gets enabled but cairo-clock does not run saying xcompmgr must be enabled