Muffin - Tinnie did not find any F77s, just some F62s and F50s to my knowledge. Parak and I are the only known DT/GH members who have an original F77.
All - unfortunately anodizing, brushed aluminum, and clear coating case options can not be offered. The CNC milling process does leave some surface discolorations, all of which do not show up after the part is powdercoated.
If the cases were completely redesigned and simplified to be extrudable out of a block of aluminum, or if we paid for die cast molds for the case, then brushed aluminum, anodizing and clear coating would likely be possible.
For those who want to pay extra for a custom powdercoated color (i.e. any color besides "off white", black, and gray) please coordinate with others who want just about the same color to minimize additional costs. I recommend posting what color you'd like and then seeing what other interest there is. For example, if you wanted a blue color, you would need to coordinate which specific Pantone color you'd like (you can go to a hardware store and ask to see their Pantone color swatches). I estimate each extra color will involve splitting $50 to $100 in additional costs among everyone who wants that color.
Some custom colors requested so far (remember to specify a specific Pantone color when making your request - they can't work with RAL colors): Purple, Porcelain white, white, white ivory, semi-gloss black, silver, Hellgrau, pink, gunmetal gray, Hunter green, red, blue, mat dark gray