Hi,
I have created a new Electrum wallet by importing private keys from another client.
A few of the addresses are highlighted with a bright red colour in the background.
Is there anything I should know before using these addresses?
Normally, a red color means that the addresses were created beyond the gap limit... In your case, there is no gap limit because you imported private keys (so you don't have a deterministic wallet).
I guess you could call it a "bug", altough i doubt it will do any harm, it's a feature for HD wallets that still gets triggered on a non-HD wallet.
I suppose the red background color will disappear once a couple of those adresses got inputs, and electrum deems the red colored addresses to be within the predefined gap limit.
But, anyways, bug or no bug, since you imported the private keys, there isn't much that could go wrong (or am i missing something here). Worst case scenario, you could always download core and import the same private keys there (altough i doubt it would ever come to that).
BTW: you could try to edit the gap limit to a number higher than the total amount of imported addresses, if you do this, the red background *SHOULD* dissapear.
EDIT => to increase the gap limit in 2.8.0
- open electrum
- go to the console
- wallet.storage.put('gap_limit',1000)
- close electrum
- restart electrum