I've found it.
First of all make one-color background.
At the second, rename in the HKEY_CURRENT_USER\Control Panel\Desktop branch "Pattern" to, for example, "Patternъ".
At the third, create string registry named "Pattern". Then you must record (or how it is in English) one of those values, listed here Desktop Patterns from Previous Windows Versions
I use 0 102 0 18 26 20 28 16
There will be the Happy Penguin Face <^v^>
Ah! And reboot after changes!!!111oneoneone