Yes indees, the solid color is better than the previous tile, but come on really, you need to make something better than this, it totally ruins the game
also, i was watching the demo 6, the multiplayer looks good, but it looks like impossible to catch the other car, so i was thinking, how about adding something like boxes that you can find items in it, like speed boost or whatever you'd like
another idea came to my mind, you could add some sort of "weather effect" for each level, for example, you could make snow storms in the snowy level, spawning some small hills of snow at random locations, if a car crashes it, it slows down or something, and in the desert level, it could be a tornado, moving around randomly, changing the direction of the car that goes into it, or gets close to it
these are just ideas, might inspire you or whatever
good luck! and change the texture!!