Some users have mentioned that the current color scheme for the oras discover --format tree command can be a bit distracting, as the colors for digests and artifact types are both very noticeable.
Let's discuss if there are better color schemes we could use to improve readability of the output.

Current display:

Possible improvements:

1. Change the digest color from light green to dark green to make it less highlighted. Change the annotations color to light black. For example:

2. Use the same color for digest and artifact type at the same level, and use a different color for different levels. For example: