Some of my blend file previews are shaded and colored. Most of them are just solid shaded:
How can I get a colored, nice shaded preview for all of my files?
fyi: i am using a mac...so a "windows only" solution won't help me.
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You get colors in the preview, if your objects have materials which don't use nodes (this is the case when the "use nodes" button isn't checked).
or if you choose a color in material -> viewport display. Then this color will be shown in the preview.
But...there must be some other possibilities, because i see more colored previews with different settings...
If once set your materials to "not use nodes" and the preview was colored, you can set them back to "use nodes" and the previews will stay colored.
Ok, one new "rule" i found out: If you uncheck "use nodes" and set a color, this color will be used in the preview. If you then check "use nodes" it still will use the color of the "unchecked nodes" color in the preview.
Okay, this seems tricky. The linked answer to the other question here is only "half the truth". The following I found out for both Eevee and Cycles, although it seems like @Chris pointed out, that option 2. below is not working on Mac, only Windows.
In the Viewport Shading settings you can use the following three Color options if you want a colored thumbnail preview:
That said, there is still room for further investigation I suppose but that's a first approach on getting colored thumbnails where you can decide what colors you want there.
And here how it turns out using Material (the object on the right has two different materials):
I've chosen different colors in the Object Properties so this is how it looks if I switch to Object:
And if I now switch to Texture and there is an Image Texture selected or you select one afterwards, at first this image is shown on the UVs of the object. And the preview won't change if you select the Mix RGB or Texture Coordinate notes afterwards:
However, if you select a node which is found under the Add > Texture menu in the Node Editor (in this example the Musgrave texture), the shading preview will now show the Viewport Display color set under Material Properties:
Here are the thumbnails: