Texture Painting on image is not showing up in Blender 2.8 I am a beginner to Blender. Currently I am following Blender Guru's Donut tutorial. When I tried to do the texture painting , color on the image is not showing up.



If I zoom in very hard then only the color is showing up.





And another problem I am having is event if I am drawing white color in the model some greyish color is getting painted. (I am not sure whether both problems are due to same cause or not).

Please help me out.

Here I am attaching the blend file and the texture files

Drive Link For Blend File
The reason that the colour is not showing up is because your image is being obscured by the UV mesh of your model which is crazy high resolution. In order to disable it go to View and uncheck "Display Texture Paint UVs":


The reason your whites are showing up as grays is because of how light works, your model gets shaded and will only display at full brightness under very strong light (which won't show in deafult Viewport Shading mode). It's normal.
In order to see the true colours on your mesh you can select flat shading for your viewport:


Also I would highly advise disabling your subsurf modifier for your texture painting, my God that donut mesh lags out my pretty decant laptop. I don't know what kind of PC you have but I'm almost sure you'll get a better expirience without the subsurf on.