Hello
How can i change background color and make it lke in examples below.
Does it possible to make it in enscape without work in photoshop after rendering?
thank you
You may pick an image with desired color and set it as the skybox texture.
@tebald , welcome to our forum! 
Feel free to also check out our dedicated “Skybox as a Background” knowledgebase article here, for further information regarding, among other things, which skyboxes are supported.
Still, just so you’re aware of this option, if you’d like to post-process your image in, for example, Photoshop, or incorporate your rendering into a photograph, a very useful tool is the Export Material-ID and Depth checkbox in the ‘Capture’ settings tab.
When active, this will tell Enscape to export essentially three renderings at once each time a render is being made – the rendered image as seen in the Enscape window itself, a second rendering that assigns a distinctive color to each material (Material-ID), and a third one that’s graded from white to black, depending on the distance from the camera (Depth Channel):
If you require more information about this subject, don’t hesitate to check out the corresponding knowledgebase article “Render an Image” here.
Let me know if you run into any problems or in case you have any further specific questions about Enscape.
Just render the object with no background and using the Mat id pass to select and change the background color in PS.