Explain why highlights look too bright

[ScanMountGoat]

It should be helpful to add a page explaining why models look too bright. The texture brightness can be easily explained by including the col brightness comparison. Specular highlights will require slightly more explanation. The main point to communicate is that bloom has little effect on the overall brightness. Bloom makes already overly bright models look even brighter.

• [x] specular image (fix labels)
• [x] col image
• [x] specular fixes
• [x] col fixes (check material params)

[ScanMountGoat]

It should be possible to fix the brightness issues using material parameters for bright col maps, but this needs to be tested in game to verify.