As you can see in the light micrographs (two first images), the spores are clearly blackish. However, the scanning electron microscope produce a mush brighter grey scale of these so the spores are colored in brown rather than in black. Makes pretty images, but not correctly representing the color as perceived when hit by photons. I guess the same problem exist in fluorescence microscopy, so I can live with that.
The IDs of these two slime molds are believed to be Lamproderma violaceum and Lamproderma scintillans (correct me if wrong). The first being more blackish in color with black spores and the second having a more brownish fruiting body with brown spores.
Note the magnification given is in relation to a print in A4 size. Click on the images to get them in higher resolution.
Lamproderma violaceum. Light micrograph, 4X objective:

Lamproderma violaceum. Light micrograph, 10X objective:

Lamproderma violaceum. SEM. Mag: 38X, Image width: 7.8 mm:

Lamproderma violaceum. SEM. Mag: 120X, Image width: 2.48 mm:

Lamproderma violaceum. SEM. Mag: 3.25KX, Image width: 91 µm. A ruptured fruiting body revealing the inside spores:

Lamproderma violaceum. SEM. Mag: 5.34KX, Image width: 56 µm. Spores on the surface of a fruiting body. Note the bacteria growing on the surface:

Lamproderma violaceum. SEM. Mag: 7.87KX, Image width: 38 µm. Spores on the surface of a fruiting body. Note the bacteria growing on the surface:

Lamproderma violaceum. SEM. Mag: 18KX, Image width: 16 µm. Small holes (around 500 nm in diameter) evenly distributed along the surface of a fruiting body. Unclear purpose of these. Perhaps to allow air to move in and out to compensate for pressure changes or to let moisture in and out:

Lamproderma scintillans. SEM. Mag: 2.3KX, Image width: 131 µm. Showing the inside of a broken fruting body:

Lamproderma scintillans. SEM. Mag: 3.25KX, Image width: 91 µm. Showing a piece of the fruting body surface:

Lamproderma scintillans. SEM. Mag: 3.12KX, Image width: 95 µm. Showing a piece of the stem:
