In solid view you can’t see the textures themselves, only the color of the material. So no matter what color is your texture, in solid view you will only see the base color.
Right now I can see your material color is grey (from the screen shot) so simply change the grey to something else in your Material panel, it won’t change anything when you render since the texture you applied is totally opaque and hides the base color, but it will change the color of the objects in your 3d view.
EDIT: Added pic to show you.
Attachments
