The difference between Charred Orange and Skidata wouldn't be drastic, but Charred Orange looks "faded" so it's more a subtle difference.
However, if you are using backlit LEDs, Charred Orange becomes ridiculously light-bleedy and you would notice it immediately.
Under normal light without LEDs, you can see the Skidata is more opaque and vibrant.
At a glance, you might not see the differences, but it is painfully obvious when comparing the two Q's and M's.
Skidata is just opaque, so the Orange doesn't get "darkened" by the dark grey base below it, but recent GMK productions have been more "translucent", which leads to less crisp looking legends. (It is a top priority to have
SKIDATA+ produced to be just like the OG Skidata).
Left: Charred Orange, Right: OG Skidata (Photo creds go to JaccoW, a crucial contributor to the project with information
)