Can I change theme color on GX?

I loved the normal opera browser, but for over 1 week straight now I continued getting a memory leak from Opera. Opera would use 8gb or more just having 1 tab open. With normal Opera open, I have 86% ram usage. With normal Opera closed, I have 30% or less

GitHub - Godiesc/firefox-gx: Firefox Theme CSS to Opera GX Skin Lovers

Request]Please include a changing rainbow color

Opera GX adds new color themes plus GX Cleaner to purge those old files

How To Change Theme Color In Opera GX

How To Change Theme Color In Opera GX

Brighten your day with Light mode in Opera GX - Blog

Opera GX ships with Razer Chroma RGB Lighting Effects

How To Change Theme Color In Opera GX

Personalize Opera: how to change browser themes - Blog

Browser Opera GX added theme in color of Cyberpunk and called it Coming Soon : r/cyberpunkgame