Hi Kuro, The people who answer questions here, for the most part, are other users volunteering their time (like me), not Mozilla employees or developers. If you want to leave feedback for developers, you can go to the Firefox ''Help'' menu and select ''Share ideas and feedback…''. Alternatively, you can use [https://connect.mozilla.org/ this link]. Your feedback is collected by a team that reads it and gathers data on the most common issues. Particularly, you might want to vote for (give ''kudos'' to) these ideas: * [https://connect.mozilla.org/t5/ideas/mobile-tab-grouping/idi-p/86 Mobile tab grouping] * [https://connect.mozilla.org/t5/ideas/background-image-in-firefox-mobile/idi-p/22424 Background image in Firefox Mobile] * [https://connect.mozilla.org/t5/ideas/allow-your-wallpaper-or-your-color-on-the-main-screen-of-firefox/idi-p/84880 Allow your wallpaper or your color on the main screen of Firefox for Android]