Hi, Some place with a ground without particular function so, how to add aspahlt surface as we could add grassland or also rocky area ? I don’t see a surface that called like this. If i use an other surafce with a different tag than that original, the color will not like asphalt or other.
The colour that is rendered is a choice for the developer of the renderer and you should not tag in order to obtain a particular colour.
If there is no more specific obvious main tag, tag with an appropriate landuse, or disused:landuse and then use surface for the material used. It is acceptable to nest landuse areas. Use disused:xxxx if there is a more obvious previous use.
Cross posted on help forum
https://help.openstreetmap.org/questions/61030/how-to-add-asphaltconcrete-surface