Comments and suggestions

Hello !
It seems to me that the difficulty level indicator is really hard to read,
I find the actual meter to be difficult to read (ok I could just check the points
given for the challenge, but why have a visual indicator if it is hard to read ?)

Why not just use
the first bar (as light green) for very easy
the second bar (as green) for easy
the third bas (as orange) for medium
the fourth bar (as red) for difficult

or something the like.

Just a suggestion, a meter should be read in a blink of an eye.

I see that the colors that are not the difficulty of the challenge are "lighter"
just make the bars white with only the one showing the difficulty colored, this
would be a helpful improvement.

Regards