
The colored gem locations in Crash 1 are as follows: These gems are scattered around the game's different levels - and in Crash 1, colored gems require you to destroy 100% of that levels boxes, all without losing a life.

So in order to use the platform, you have to collect the gem that matches the platform's wireframe in color. If you look at the different wireframes, you'll see each of them is colored differently. The way to get these phantom platforms to be substantial is simple - you have to collecta specific colored gem in order to be able to use them.
