UTextureRendeTarget2D is getting too bright while being drawn.

106005-111.png

Texture, used to draw this window is black and white. User supposed to choose interface color he likes.
Color, used on screenshots to draw original texture is FLinearColor(1.0f, 0.9f, 0.7f). Color, used to draw UTextureRenderTarget2D is FLinearColor::White.

Is there a way to draw UTextureRenderTarget2D as is, without adding any color at all?
Tried to use FLinearColor::Gray, looks awful.