now i get an error that the moniker 'lol' already exists (because the previous one is still there) how do i remove a moniker? And can i rename the asset and use the same 'color' to connect to the same asset under a different name?
You can edit moniker when you add an asset, just call it lol2 or something like that. That name exists only in your wallet, it doesn't affect anything.
Currently there is no button for deleting assets, and doing it via command-line is a bit tedious.
Edit: something else i'm curious about: does this client use the same 'protocol' to color the coins as the website coinprism?
No.
or are those two incompatible? I kinda like the broader definition options on coinprism, but i absolutely hate the fact that it uses a centralised webwallet. :p
We plan to add compatibility with CoinPrism some time later.
What do you mean by broader definition options?