Here is a flat surface with the colourmap applied. One is with terrain texture one is with out. In each of these you can still see the lines and x's that look like fabric "ripstop". See the screen shots attached...
Perhaps I am missing something or not doing something correct, If so, please let me know.
For number four question...
If I create a colourmap that is 2048 x1024 to cover a mountain range, the image when I import it into EE is a square image, appears to be 512x512 (I could be wrong on the image size.
If I change the size inside the Import Colormap to fit across the mountain range, it comes out pixelated. So when you go up close to the mountains (around 100-200 meters), you see the individual pixels instead of it blending into the terrain and terrain textures.
Not sure where the attachments went. So here are the images from my server...
No matter how large or what resolution I create my original image, it will pixelate it once I import it. Even at 5x5 size in the Import Colourmap tool. See last image attached.
This happens even if i use a black and white "clouded" looking image for mountain high and low lights.
First two images are with and with out terrain textures on a flat surface looking down on an angle.
Second three are looking more across the flat surface at an angle with three different sizes selected in the Import Colourmap tool.
This colourmap I created and used in this example is 2048x2048.