Xスタイル壁紙をカスタマイズできるサイト
The website customize X Style Wallpapers
XR用は準備中かもしれません。
It is an announcement of Third-party site. theLMGN made a generator to customize the frame color for X series iPhone. I put a link also at the end of the X Style Wallpapers lineup.
It may be preparing for XR.