Deathadder v2 changes color while on lock screen

The mouse needs Synapse to control the lighting effects, so this is to be expected. Without the app running in the background, the light effects will reset to the default settings.

Yeah, however there should be a way to do this...specially when the mouse allows to save profiles In it. In addition, hyperx keyboard that a friend owns does not reset. And if i understood correctly older razer devices with synapse 2 were working like this. I do not know if it possible, but i would appreciate an upgrade in synapse software to let you allow this, or the mouse firmware...

This is a design choice and isn't something I have a say in. That said, you can submit a feature request using the submit feedback feature in Synapse. Do note that all our peripherals with onboard memory will only save profiles and other performance related settings. Lighting effects will still be controlled by Synapse.