The Color texture allows a flat color to be assigned as a texture.
UI Text Box
type
tip
Any texture can be replaced via the Replace With New Texture (Image Added) button, which activates when you select the texture to be replaced. If the texture is an instance, all copies are changed as well.
Column
width
5%
Column
width
45%35%
Image Modified
Color
...
Section
Column
width
50%60%
Color – Specifies a color to be used as a texture.