To change the main color of the ceiling to any other, use the color map in the material.

The render was created in Corona 6.
The materials in Vray are translated using a converter.

For Corona render, it is recommended to install a version not lower than 1.5, since the glossiness of materials is configured with PBR in mind
Who works in a V-Ray version lower than 3.1 be careful, in the materials in the BRDF section there is a Microfaset GTR ( GGX ), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward – which is preferable for you

The penultimate preview in PNG format on a transparent background can be used to make a collage

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