Post updated with idea/solution for better random coloring.
This is the problem so far:
Many times when you load a sample in the playlist or channel rack, this will receive the same or almost the same colors as the previous/contiguous clip.
THIS SEEMS TO DEPEND ON THE NAME OF THE ADDED SAMPLE: SIMILAR NAMES GIVE SIMILAR COLORS. EVERY DIFFERENT LETTER ADDS A LITTLE DIFFERENCE TO THE HUE. The solution:
Use a color randomizing system that for contiguous samples uses only complementary colors. This way you think you'd get always two colors, but if instead each time a new hue is selected at e.g. 33° or 45° from the previous complementaty line (look at the hue wheel here, read the numbers in sequence, you'll never get two similar contiguous colors, and they'd be always different), you will always have a completely different colour that stays perfectly visible and doesn't clash with the previous/next ones.
There is no need for 2000 shades of grey, even just 8 good colors are more than enough! (45° hue difference, end of story)
Regards,
D3Mens