I could tell 0 difference, comparing them side by side in the same board with either black or clear stem. From what I can tell Cherry has 3 springs, light ~55g in red/brown/blue, medium ~65g in black/clear/green, and heavy ~75g in grey linear/grey tactile.
If you look at force graph, black and clear are both in the 60-65 range, with clear being 'heavier' because of having to push past the bump.