Fred's just released another version
Link
Apparently it has 16 levels now...
Please forgive me for the somewhat broken version 0.12c. The 4-color mode is fixed now. In addition, I added colors to go as high as 16 in the colored mode. You can see from my New_a.bmp map I did not go higher than color 6 in trying it out. There are at various colors
Here's the color code combos:
Water----0 0 255
Level 0----128 0 0
Level 1----160 0 0
Level 2----192 0 0
Level 3----255 0 0
Level 4----96 96 0
Level 5----128 128 0
Level 6----128 160 0
Level 7----128 192 0
Level 8----128 255 0
Level 9----96 96 128
Level 10----128 128 128
Level 11----160 128 128
Level 12----192 128 128
Level 13----255 128 128
Level 14----128 160 128
Level 15----128 192 128
Level 16----128 255 128