Love the look of it! Random gen is great and the color matching is a nice twist on the standard Pac-Man formula.
It's really challenging, which is cool, but sometimes feels a bit unfair. The main culprit of this feeling (I think) is the tendency for chasing ghosts to clump up next to each other. If the ghosts are the same color, it's no biggie—if they're different colors, then becomes a problem.
Some "personal space" logic that prevents them from getting too close to each other would help. Another option would be to subtly differentiate the pathfinding algorithm of one color from another. IE: if choosing between two directions where each direction is equally fast, blue always goes left and red always goes right. Could also do something as simple as make it so a chasing ghost has a % chance to take a sub optimal turn at any intersection.
Looking forward to seeing the next release!