Hello Wix Community, There is a thing that is really making me feel sad that the other web builder apps have the ability to customize their 404 error pages and we dont 
Lets all vote for it to be the next update for wix cuz it makes us look unprofessional when your color theme is orange and navy blue while your error page is white and light blue (wix theme)…
Please wix developers consider this feature…
How is this not a thing!!!?? Seriously
This is horrible, I hate that I cannot change it. I am about to take all our websites to another provider because of this. It looks so unprofessional and I already had some users writing to me like oh you used a template? When our site is completely design from scratch and use WIX because it’s a reliable platform but the 404 page is such a killer.
Hi guys!
There are ways to work around this.
Please take a look at this thread.
Hope it helps.
Best of luck!
Doron. 